Stable emulsion compositions

ABSTRACT

An emulsion composition containing a compound represented by the formula: 
                         
wherein R, R 0 , Ar and n are as defined in the specification or a salt thereof or a prodrug thereof, wherein the composition is adjusted to have a pH of not more than about 6, shows improved stability of the compound, a salt thereof or a prodrug thereof, and realizes expression of superior efficacy.

This application is the National Phase filing of International Patent Application No. PCT/JP01/00705, filed Feb. 1, 2001.

1. Technical Field

The present invention relates to an emulsion composition having improved stability.

2. Background Art

WO 99/46242 describes that a compound represented by the formula:

wherein R represents an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR¹ (wherein R¹ represents a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

(wherein R^(1b) represents a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(1c) is, the same as or different from R^(1b), a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R⁰ represents a hydrogen atom or an aliphatic hydrocarbon group, or R and R⁰ represent a bond with each other, ring A is a cycloalkene substituted by 1 to 4 substituents selected from (1) an aliphatic hydrocarbon group optionally having substituents, (2) an aromatic hydrocarbon group optionally having substituents, (3) a group represented by the formula: —OR¹ (wherein R¹ is as defined above) and (4) a halogen atom, Ar represents an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

and n is an integer of 1 to 4, and a compound represented by the formula:

wherein R^(a)represents an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR^(1a) (wherein R^(1a) represents a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

(wherein R^(1a) is as defined above, R^(1b) is, the same as or different from R^(1a), a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(0a) represents a hydrogen atom or an aliphatic hydrocarbon group, or R^(a) and R^(0a) represent a bond with each other, Ar^(a) represents an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

and n represents an integer of 1 to 4, a salt thereof and a prodrug thereof have a nitric oxide (NO) production-inhibiting effect and an inhibitory effect on the production of inflammatory cytokines, such as TNF-α, IL-1, IL-6 and the like, and are useful as a prophylactic and therapeutic agent against the diseases including cardiac diseases, autoimmune diseases, inflammatory diseases, central nervous system diseases, infectious diseases, sepsis, septic shock and the like.

This publication also describes that an oily injection can be produced by dissolving, suspending or emulsifying this compound in a vegetable oil or propylene glycol.

The present invention aims at providing an emulsion composition having more improved stability, which contains the above-mentioned compound.

DISCLOSURE OF THE INVENTION

The present inventors have conducted intensive studies in view of the above-mentioned problems and found that adjustment of the pH of an emulsion composition containing the above-mentioned compound to not more than about 6 surprisingly improves stability of the compound and the composition and realizes expression of superior efficacy. The present inventors have further investigated based on this finding and completed the present invention.

Accordingly, the present invention provides the following.

[1] An emulsion composition comprising a compound (I) represented by the formula:

wherein R is an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR¹ (wherein R¹ is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

wherein R^(1b) is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(1c) is the same as or different from R^(1b) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R⁰ is a hydrogen atom or an aliphatic hydrocarbon group, or R and R⁰ in combination represent a bond, ring A¹ is a cycloalkene optionally substituted by 1 to 4 substituents selected from (1) an aliphatic hydrocarbon group optionally having substituents, (2) an aromatic hydrocarbon group optionally having substituents, (3) a group represented by the formula: —OR¹ (wherein R¹ is as defined above) and (4) a halogen atom, Ar is an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

and n is an integer of 1 to 4, a salt thereof or a prodrug thereof, wherein said composition is adjusted to have a pH of not more than about 6, [2] the composition of [1], wherein R is (1) (A) a linear or branched C₁₋₂₀ alkyl group, (B) a C₃₋₁₀ cycloalkyl group, (C) a C₄₋₁₂ cycloalkylalkyl group, (D) a lower (C₃₋₆) alkenyl group or (E) a lower (C₃₋₆) alkynyl group, all of which optionally having 1 to 4 substituents selected from the group (hereinafter substituent group A) consisting of (i) a 5- to 8-membered ring group or its condensed ring group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which is optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (ii) an oxo group, (iii) a hydroxyl group, (iv) a C₁₋₆ alkoxy group, (v) a C₃₋₁₀ cycloalkyloxy group, (vi) a C₆₋₁₀ aryloxy group, (vii) a C₇₋₁₉ aralkyloxy group, (viii) a 5- to 8-membered ring group or its condensed ring-oxy group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which is optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (ix) a C₁₋₆ alkylthio group (sulfur atom may be oxidized), (x) a C₃₋₁₀ cycloalkylthio group (sulfur atom may be oxidized), (xi) a C₆₋₁₀ arylthio group (sulfur atom may be oxidized), (xii) a C₇₋₁₉ aralkylthio group (sulfur atom may be oxidized), (xiii) a 5- to 8-membered ring group or its condensed ring-thio group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which is optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (xiv) a 5- to 8-membered ring group or its condensed ring-sulfinyl group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which is optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (xv) a 5- to 8-membered ring group or its condensed ring-sulfonyl group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which is optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (xvi) a nitro group, (xvii) a halogen atom, (xviii) a cyano group, (xix) a carboxyl group, (xx) a C₁₋₁₀ alkoxy-carbonyl group, (xxi) a C₃₋₆ cycloalkyloxy-carbonyl group, (xxii) a C₆₋₁₀ aryloxy-carbonyl group, (xxiii) a C₇₋₁₉ aralkyloxy-carbonyl group, (xxiv) a 5- to 8-membered ring group or its-condensed ring-oxycarbonyl group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which is optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (xxv) a C₆₋₁₀ aryl-carbonyl group, (xxvi) a C₁₋₆ alkanoyl group, (xxvii) a C₃₋₅ alkenoyl group, (xxviii) a C₆₋₁₀ aryl-carbonyloxy group, (xxix) a C₂₋₆ alkanoyloxy group, (xxx) a C₃₋₅ alkenoyloxy group, (xxxi) a carbamoyl group or a cyclic aminocarbonyl group, which is optionally substituted by 1 or 2 substituents selected from a C₁₋₄ alkyl, a phenyl, a C₁₋₇ acyl and a C₁₋₄ alkoxy-phenyl, (xxxii) a thiocarbamoyl group optionally substituted by 1 or 2 substituents selected from a C₁₋₄ alkyl and a phenyl, (xxxiii) a carbamoyloxy group optionally substituted by 1 or 2 substituents selected from a C₁₋₄ alkyl and a phenyl, (xxxiv) a C₁₋₆ alkanoylamino group, (xxxv) a C₆₋₁₀ aryl-carbonylamino group, (xxxvi) a C₁₋₁₀ alkoxy-carboxamide group, (xxxvii) a C₆₋₁₀ aryloxy-carboxamide group, (xxxviii) a C₇₋₁₉ aralkyloxy-carboxamide group, (xxxix) a C₁₋₁₀ alkoxy-carbonyloxy group, (xxxx) a C₆₋₁₀ aryloxy-carbonyloxy group, (xxxxi) a C₇₋₁₉ aralkyloxy-carbonyloxy group, (xxxxii) a C₃₋₁₀ cycloalkyloxy-carbonyloxy group, (xxxxiii) a ureido group optionally substituted by 1 to 3 substituents selected from a C₁₋₄ alkyl group and a phenyl group, and (xxxxiv) a C₆₋₁₀ aryl group optionally having 1 to 4 substituents selected from the group consisting of the above-mentioned (i) to (xxxxiii), wherein the substituent selected from substituent group A may form, together with (A) a linear or branched C₁₋₂₀ alkyl group, (B) a C₃₋₁₀ cycloalkyl group, (C) a C₄₋₁₂ cycloalkylalkyl group, (D) a lower (C₃₋₆) alkenyl group or (E) a lower (C₃₋₆) alkynyl group, an indanyl group or a 1,2,3,4-tetrahydronaphthyl group, all of which optionally having 1 to 4 substituents selected from the substituent group A, (2) a C₆₋₁₄ aromatic hydrocarbon group optionally having 1 to 5 substituents selected from the group consisting of a halogen atom, a C₁₋₄ alkyl group, a C₁₋₄ alkoxy group, a C₁₋₄ alkoxy-carbonyl group, a carboxyl group, a nitro group, a cyano group, a hydroxyl group, a C₁₋₄ alkanoylamino group, a C₃₋₆ cycloalkyl group, a C₆₋₁₀ aryl group, a halogeno C₁₋₄ alkyl group, a halogeno C₁₋₄ alkoxy group, a C₁₋₄ alkylthio group, a C₁₋₄ alkylsulfonyl group, a C₁₋₄ alkanoyl group, a 5-membered aromatic heterocyclic group, a carbamoyl group, a C₁₋₄ alkyl-carbamoyl group, a C₁₋₄ alkoxy-carbonyl-C₁₋₄ alkyl-carbamoyl group and a 1,3-diacylguanidino-C₁₋₄ alkyl group, (3) a 5- to 8-membered ring group or its condensed ring group, which contains 1 to 4 hetero atoms selected from a nitrogen atom (optionally oxidized), an oxygen atom and a sulfur atom, and which optionally has 1 to 3 substituents selected from the group consisting of a C₁₋₄ alkyl, a hydroxy, an oxo and a C₁₋₄ alkoxy, (4) a group represented by the formula —OR¹ (wherein R¹ is (i) a hydrogen atom or (ii) (A) a linear or branched C₁₋₂₀ alkyl group, (B) a C₃₋₁₀ cycloalkyl group, (C) a C₄₋₁₂ cycloalkylalkyl group, (D) a lower (C₃₋₆) alkenyl group or (E) a lower (C₃₋₆) alkynyl group, all of which optionally having 1 to 4 substituents selected from the substituent group A), wherein the substituent selected from the substituent group A may form, together with (A) the linear or branched C₁₋₂₀ alkyl group, (B) the C₃₋₁₀ cycloalkyl group, (C) the C₄₋₁₂ cycloalkylalkyl group, (D) the lower (C₃₋₆) alkenyl group or (E) the lower (C₃₋₆) alkynyl group, an indanyl group or 1,2,3,4-tetrahydronaphthyl group, which optionally has 1 to 4 substituents selected from the substituent group A, or (5) a group represented by the formula

wherein R^(1b) is (i) a hydrogen atom or (ii) (A) a linear or branched C₁₋₂₀ alkyl group, (B) a C₃₋₁₀ cycloalkyl group, (C) a C₄₋₁₂ cycloalkylalkyl group, (D) a lower (C₃₋₆) alkenyl group or (E) a lower (C₃₋₆) alkynyl group, all of which optionally having 1 to 4 substituents selected from the substituent group A, (wherein the substituent selected from the substituent group A may form, together with (A) the linear or branched C₁₋₂₀ alkyl group, (B) the C₃₋₁₀ cycloalkyl group, (C) the C₄₋₁₂ cycloalkylalkyl group, (D) the lower (C₃₋₆) alkenyl group or (E) the lower (C₃₋₆) alkynyl group, an indanyl group or a 1,2,3,4-tetrahydronaphthyl group, which optionally has 1 to 4 substituents selected from the substituent group A), and R^(1c) is the same as or different from R^(1b) and is (i) a hydrogen atom or (ii) (A) a linear or branched C₁₋₂₀ alkyl group, (B) a C₃₋₁₀ cycloalkyl group, (C) a C₄₋₁₂ cycloalkylalkyl group, (D) a lower (C₃₋₆) alkenyl group or (E) a lower (C₃₋₆) alkynyl group, all of which optionally having 1 to 4 substituents selected from the substituent group A (wherein the substituent selected from the substituent group A may form, together with (A) the linear or branched C₁₋₂₀ alkyl group, (B) the C₃₋₁₀ cycloalkyl group, (C) the C₄₋₁₂ cycloalkylalkyl group, (D) the lower (C₃₋₆) alkenyl group or (E) the lower (C₃₋₆) alkynyl group, an indanyl group or a 1,2,3,4-tetrahydronaphthyl group, which optionally has 1 to 4 substituents selected from the substituent-group A) or an aliphatic hydrocarbon group optionally having a substituent, R⁰ is a hydrogen atom, a linear or branched C₁₋₂₀ alkyl group, a C₃₋₁₀ cycloalkyl group, a C₄₋₁₂ cycloalkylalkyl group, a lower (C₃₋₆) alkenyl group or a lower (C₃₋₆) alkynyl group, or R and R⁰ in combination represent a bond, ring A¹ is (1) (A) a linear or branched C₁₋₂₀ alkyl group (B) a C₃₋₁₀ cycloalkyl group, (C) a C₄₋₁₂ cycloalkylalkyl group, (D) a lower (C₃₋₆) alkenyl group or (E) a lower (C₃₋₆) alkynyl group, all of which optionally having 1 to 4 substituents selected from the substituent group A (wherein the substituents selected from the substituent group A may form, together with (A) the linear or branched C₁₋₂₀ alkyl group, (B) the C₃₋₁₀ cycloalkyl group, (C) the C₄₋₁₂ cycloalkylalkyl group, (D) the lower (C₃₋₆) alkenyl group or (E) the lower (C₃₋₆) alkynyl group, an indanyl group or a 1,2,3,4-tetrahydronaphthyl group, which optionally has 1 to 4 substituents selected from the substituent group A), (2) a C₆₋₁₄ aromatic hydrocarbon group optionally having 1 to 5 substituents selected from the group consisting of a halogen atom, a C₁₋₄ alkyl group, a C₁₋₄ alkoxy group, a C₁₋₄ alkoxy-carbonyl group, a carboxyl group, a nitro group, a cyano group, a hydroxyl group, a C₁₋₄ alkanoylamino group, a C₃₋₆ cycloalkyl group, a C₆₋₁₀ aryl group, a halogeno C₁₋₄ alkyl group, a halogeno C₁₋₄ alkoxy group, a C₁₋₄ alkylthio group, a C₁₋₄ alkylsulfonyl group, a C₁₋₄ alkanoyl group, a 5-membered aromatic heterocyclic group, a carbamoyl group, a C₁₋₄ alkyl-carbamoyl group, a C₁₋₄ alkoxy-carbonyl-C₁₋₄ alkyl-carbamoyl group and a 1,3-diacylguanidino-C₁₋₄ alkyl group, (3) a group represented by the formula —OR¹ (wherein R¹ is as defined above) or (4) a cycloalkene optionally substituted by 1 to 4 substituents selected from halogen atoms, and Ar is a C₆₋₁₄ aromatic hydrocarbon group optionally having 1 to 5 substituents selected from the group consisting of a halogen atom, a C₁₋₄ alkyl group, a C₁₋₄ alkoxy group, a C₁₋₄ alkoxycarbonyl group, a carboxyl group, a nitro group, a cyano group, a hydroxyl group, a C₁₋₄ alkanoylamino group, a C₃₋₆ cycloalkyl group, a C₆₋₁₀ aryl group, a halogeno C₁₋₄ alkyl group, a halogeno C₁₋₄ alkoxy group, a C₁₋₄ alkylthio group, a C₁₋₄ alkylsulfonyl group, a C₁₋₄ alkanoyl group, a 5-membered aromatic heterocyclic group, a carbamoyl group, a C₁₋₄ alkyl-carbamoyl group, a C₁₋₄ alkoxy-carbonyl-C₁₋₄ alkyl-carbamoyl group and a 1,3-diacylguanidino-C₁₋₄ alkyl group, [3] the composition of [1], wherein the compound is (A) d-ethyl 6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, (B) d-ethyl 6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, (C) ethyl 6-[N-(2-chlorophenyl)-sulfamoyl]-1-cyclohexene-1-carboxylate, (D) ethyl 6-[N-(2-chloro-4-methylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, or a salt thereof, [4] the composition of [1], which is an oil-in-water type, [5] the composition of [1], which has a pH adjusted to about 3 to about 6, [6] the composition of [1], which is used as an injection, [7] the composition of [1], which comprises a disperse phase particle comprising an oil component, an emulsifier and compound (I), a salt thereof or a prodrug thereof, and water in which the disperse phase particle is dispersed, [8] the composition of [7], wherein the oil component is selected from the group consisting of a vegetable oil, a partially hydrogenated vegetable oil, a simple glyceride, a mixed glyceride and a medium-size chain fatty acid glycerol ester, [9] the composition of [7], wherein the oil component is a vegetable oil, [10] the composition of [9], wherein the vegetable oil is a soybean oil, a cottonseed oil, a rapeseed oil, a peanut oil, a safflower oil, a sesame oil, a rice bran oil, a corn germ oil, a sunflower oil, a poppy oil or an olive oil, [11] the composition of [10], wherein the vegetable oil is a soybean oil, [12] the composition of [7], wherein the emulsifier is a phospholipid or a nonionic surfactant, [13] the composition of [7], wherein the emulsifier is a phospholipid, [14] the composition of [13], wherein the phospholipid is an egg yolk lecithin, a soybean lecithin, a hydrogenation product thereof, a phosphatidylcholine, a phosphatidylethanolamine, a phosphatidic acid, a phosphatidylserine, a phosphatidylinositol or a phosphatidylglycerol, [15] the composition of [14], wherein the phospholipid is an egg yolk lecithin, [16] the composition of [7], wherein the oil component is used in a proportion of about 1–about 30 wt % of the whole composition, [17] the composition of [7], wherein the emulsifier is used in a proportion of about 0.1–about 10 w/v % of the whole composition, [18] the composition of [7], wherein the emulsifier is contained in a proportion of about 0.1–about 150 wt % of the oil component, [19] the composition of [1], which comprises a vegetable oil and a phospholipid, [20] the composition of [1], which comprises a soybean oil, an egg yolk lecithin, a glycerol and a purified water, [21] the composition of [1] or [7], which comprises the compound (I), a salt thereof or a prodrug thereof in a proportion of about 0.001–about 95 wt % of the whole composition, [22] the composition of [1] or [7], which comprises the compound (I), a salt thereof or a prodrug thereof in a proportion of about 0.01–about 30 wt % of the whole composition, [23] the composition of [7], wherein the disperse phase particle has an average particle size of about 25–about 500 nm, [24] the composition of [1], which is a nitric oxide and/or a cytokine production inhibitor, [25] the composition of [1], which is an agent for the prophylaxis or treatment of a cardiac disease, an autoimmune disease, sepsis or septic shock, [26] a method for stabilizing an emulsion composition comprising a compound represented by the formula:

wherein R is an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR¹ (wherein R¹ is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

wherein R^(1b) is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(1c) is the same as or different from R^(1b) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R⁰ is a hydrogen atom or an aliphatic hydrocarbon group, or R and R⁰ in combination represent a bond, ring A¹ is a cycloalkene optionally substituted by 1 to 4 substituents selected from (1) an aliphatic hydrocarbon group optionally having substituents, (2) an aromatic hydrocarbon group optionally having substituents, (3) a group represented by the formula: —OR¹ (wherein R¹ is as defined above) and (4) a halogen atom, Ar is an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

and n is an integer of 1 to 4, a salt thereof or a prodrug thereof, wherein said composition is adjusted to have a pH of not more than about 6, [27] the stabilizing method of [26], which improves the stability during autoclave sterilization, [28] a method for the prophylaxis or treatment of a cardiac disease, an autoimmune disease, sepsis or septic shock, which comprises administrating an effective amount of the composition of [1] to a mammal, and [29] use of the composition of [1] for manufacturing an agent for the prophylaxis or treatment of a cardiac disease, an autoimmune, disease, sepsis or septic shock.

The present invention also provides

[30] the composition of [1], wherein the compound represented by the formula (I) is (i) a compound represented by the formula:

wherein R is an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR¹ (wherein R¹ is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

wherein R^(1b) is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(1c) is the same as or different from R^(1b) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R⁰ is a hydrogen atom or an aliphatic hydrocarbon group, or R and R⁰ in combination represent a bond, ring A2 is a cycloalkene substituted by 1 to 4 substituents selected from (1) an aliphatic hydrocarbon group optionally having substituents, (2) an aromatic hydrocarbon group optionally having substituents, (3) a group represented by the formula: —OR¹ (wherein R¹ is as defined above) and (4) a halogen atom, Ar is an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

and n is an integer of 1 to 4, or (ii) a compound represented by the formula:

wherein R^(a) is an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR^(1a) (wherein R^(1a) is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

wherein R^(1a) is as defined above, and R^(1b) is the same as or different from R^(1a) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(0a) is a hydrogen atom or an aliphatic hydrocarbon group, or R^(a) and R^(0a) in combination represent a bond, Ar^(a) is an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

n is an integer of 1 to 4, [31] the composition of [30], wherein the compound represented by the formula (Iaa) is a compound represented by the formula:

wherein each symbol is as defined in [30], [32] the composition of [30], wherein the ring A² is a cycloalkene substituted by a lower alkyl, a phenyl or a halogen, R¹ is a lower alkyl group, Ar is a phenyl group optionally having substituents, and n is 2, [33] the composition of [30], wherein the compound represented by the formula (Ie) is a compound of the formula:

wherein R is an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR¹ (wherein R¹ is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

(wherein R^(1b) is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, and R^(1c) is the same as or different from R^(1b) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents), R⁰ is a hydrogen atom or an aliphatic hydrocarbon group, or R and R⁰ in combination represent a bond, Ar is an aromatic hydrocarbon group optionally having substituents, a group represented by the formula:

represents a group represented by the formula:

and n is an integer of 1 to 4, provided that when n is 1 or 2 and (i) R¹ is a hydrogen atom or an ethyl group, R⁰ is a methyl group and Ar is a phenyl group or (ii) R and R⁰ in combination represent a bond and Ar is a phenyl group, a 2-methylphenyl group, a 4-bromophenyl group, a 4-methoxyphenyl group or a 2,6-dimethylphenyl group, a group represented by the formula:

should be a group represented by the formula:

[34] the composition of [33], wherein the compound represented by the formula (Ia) is a compound represented by the formula:

wherein R² is a hydrogen atom or an aliphatic hydrocarbon group, and R¹, Ar, n and the group represented by the formula:

are as defined in [33], provided that when n is 1 or 2, Ar is a phenyl group, R¹ is a hydrogen atom or an ethyl group and R² is a methyl group, the group represented by the formula:

should be a group represented by the formula:

[35] the composition of [34], wherein R¹ is a lower alkyl group optionally having substituents, [36] the composition of [34], wherein R¹ is an ethyl group, [37] the composition of [34], wherein R² is a hydrogen atom or a lower alkyl group, [38] the composition of [34], wherein R² is a hydrogen atom, [39] the composition of [34], wherein Ar is a phenyl group optionally having substituents, [40] the composition of [34], wherein Ar is a phenyl group substituted by a halogen and/or a lower alkyl, [41] the composition of [34], wherein Ar is a group represented by the formula:

wherein R⁴ and R⁵ are the same or different and each is a halogen atom or a lower alkyl group, and n is an integer of 0 to 2, [42] the composition of [34], wherein the halogen atom is a fluorine atom or a chlorine atom, [43] the composition of [34], wherein the group represented by the formula:

is a group represented by the formula:

wherein n is as defined in [34], [44] the composition of [34], wherein n is 1 to 3, [45] the composition of [34], wherein R¹ is a lower alkyl group optionally having substituents, R² is a hydrogen atom or a lower alkyl group, Ar is a phenyl group optionally having substituents, and n is 1, 2 or 3, [46] the composition of [34], wherein R¹ is a lower alkyl group optionally having substituents, R² is a hydrogen atom, Ar is a phenyl group substituted by a halogen atom, and n is 2, [47] the composition of [33], wherein the compound represented by the formula (Ia) is a compound represented by the formula:

wherein Ar and n are as defined in [33], [48] the composition of [47], wherein Ar is a phenyl group optionally having substituents, and n is 2, [49] the composition of [33], wherein the compound represented by the formula (Ia) is a compound represented by the formula:

wherein R¹, R² and Ar are as defined in [34], and the group represented by the formula:

represents a group represented by the formula:

provided that when Ar is a phenyl group, R¹ is a hydrogen atom or an ethyl group and R² is a methyl group, the group represented by the formula:

should be a group represented by the formula:

[50] the composition of [30], wherein the compound represented by the formula (Ie) is a compound represented by the formula:

wherein R^(2a) is a hydrogen atom or an aliphatic hydrocarbon group, and R^(1a), Ar^(a), n and the group represented by the formula:

are as defined in [30], and [51] the composition of [30], wherein the compound represented by the formula (Ie) is a compound represented by the formula:

wherein R^(1a), R^(2a) and Ar^(a) are as defined in [50] and the group represented by the formula:

is a group represented by the formula:

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 shows the results of analysis of an aniline compound by high performance liquid chromatography (HPLC), which was contained in the emulsions of Example 1 adjusted to have various pHs.

BEST MODE FOR EMBODYING THE INVENTION

In the specification, R represents an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR¹ (wherein R¹ represents a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

wherein R^(1b) represents a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, R^(1c) is the same as or different from R^(1b) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents, or R forms a bond with R⁰, with preference given to the group represented by the formula: —OR¹ (wherein R¹ is as defined above).

R^(a) represents an aliphatic hydrocarbon group optionally having substituents, an aromatic hydrocarbon group optionally having substituents, a heterocyclic group optionally having substituents, a group represented by the formula: —OR^(1a) (wherein R^(1a) represents a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents) or a group represented by the formula:

(wherein R^(1a) is as defined above, R^(1b) is the same as or different from R^(1a) and is a hydrogen atom or an aliphatic hydrocarbon group optionally having substituents), or form a bond with R^(0a), with preference given to the group represented by the formula: —OR^(1a) (wherein R^(1a) is as defined above).

When R and R⁰ in combination represent a bond, the compound represented by the formula (Iaa) can be represented by the formula:

wherein each symbol is as defined above, and specifically can be represented by the formula:

wherein each symbol is as defined above, or

wherein each symbol is as defined above.

When R and R⁰ in combination represent a bond, the compound represented by the formula (Ia) can be represented by the formula:

wherein each symbol is as defined above, and specifically can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above.

When R^(a) and R^(0a) in combination represent a bond, the compound represented by the formula (Ie) can be represented by the formula:

wherein each symbol is as defined above, and specifically can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above.

When R is a group represented by the formula: —OR¹ (wherein R¹ is as defined above), the compound represented by the formula (Iaa) can be represented by the formula:

wherein each symbol is as defined above, and specifically can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above.

When R is a group represented by the formula: —OR¹ (wherein R¹ is as defined above), the compound represented by the formula (Ia) can be represented by the formula:

wherein each symbol is as defined above, and specifically can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above.

When R^(a) is a group represented by the formula: —OR^(1a) (wherein R^(1a) is as defined above), the compound represented by the formula (Ie) can be represented by the formula:

wherein each symbol is as defined above, and specifically can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above.

As the compound represented by the formula (Iaa), a compound represented by the formula (Icc) or the formula (Inn) is preferable, as the compound represented by the formula (Ia), a compound represented by the formula (Ic) or the formula (In) is preferable, and as the compound represented by the formula (Ie), a compound represented by the formula (Ik) or the formula (Ip) is preferable.

Similarly, the compound represented by the formula (Id) can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above, and the compound represented by the formula (Ig) can be represented by the formula:

wherein each symbol is as defined above, or the formula:

wherein each symbol is as defined above.

As the compound represented by the formula (Id), a compound represented by the formula (Ir) is preferable, and as the compound represented by the formula (Ig), a compound represented by the formula (It) is preferable.

In the compound represented by the formula (Ia), when n is 1 or 2, and (i) R¹ is a hydrogen atom or an ethyl group, R⁰ is a methyl group and Ar is a phenyl group, or (ii) R and R⁰ in combination represent a bond and Ar is a phenyl group, a 2-methylphenyl group, a 4-bromophenyl group, a 4-methoxyphenyl group or a 2,6-dimethylphenyl group,

a group represented by the formula:

should be a group represented by the formula:

Furthermore, when n is 1 to 4, and (i) R¹ is a hydrogen atom or a lower alkyl group optionally having substituents, R⁰ is a lower alkyl group optionally having substituents, and Ar is a phenyl group optionally having substituents, or (ii) R and R⁰ in combination represent a bond and Ar is a phenyl group optionally having substituents,

a group represented by the formula:

may be a group represented by the formula:

In the compound represented by the formula (Ib), when n is 1 or 2, R¹ is a hydrogen atom or an ethyl group, R⁰ is a methyl group, and Ar is a phenyl group,

a group represented by the formula:

should be a group represented by the formula:

Furthermore, when n is 1 to 4, and R¹ is a hydrogen atom or a lower alkyl group optionally having substituents, R⁰ is a lower alkyl group optionally having substituents, and Ar is a phenyl group optionally having substituents,

a group represented by the formula:

may be a group represented by the formula:

As the “aliphatic hydrocarbon group” of the “aliphatic hydrocarbon group optionally having substituents” represented by R, R¹, R^(1a), R^(1b) and R^(1c), and the “aliphatic hydrocarbon group” represented by R⁰, R^(0a), R² and R^(2a), for example, an alkyl group, a cycloalkyl group, a cycloalkylalkyl group, an alkenyl group, an alkynyl group, etc. are preferable.

As the alkyl group, for example, a linear or branched alkyl group having 1 to 20 carbon atoms (e.g., a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a dodecyl group, etc.), and the like are preferable, and particularly, for example, a lower alkyl group having 1 to 6 carbon atoms (e.g., a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, etc.), and the like are preferable.

As the cycloalkyl group, for example, a cycloalkyl group having 3 to 10 carbon atoms (e.g., a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, etc.), and the like are preferable, and particularly, for example, a cycloalkyl group having 3 to 6 carbon atoms (e.g., a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, etc.), and the like are preferable.

As the cycloalkylalkyl group, for example, a cycloalkylalkyl group having 4 to 12 carbon atoms (e.g., a cyclopropylmethyl group, a cyclopentylmethyl group, a cyclohexylmethyl group, a cycloheptylmethyl group, etc.), and the like are preferable, and particularly, for example, a cycloalkylalkyl group having 4 to 8 (particularly 4 to 7) carbon atoms (e.g., a cyclopropylmethyl group, a cyclopentylmethyl group, a cyclohexylmethyl group, etc.), and the like are preferable.

As the alkenyl group, for example, a lower alkenyl group having 3 to 6 carbon atoms (e.g., a propenyl group, a butenyl group, a pentenyl group, etc.) are preferable, and particularly, for example, a lower alkenyl group having 3 or 4 carbon atoms (e.g., a propenyl group, a butenyl group, etc.), and the like are preferable.

As the alkynyl group, for example, a lower alkynyl group having 3 to 6 carbon atoms (e.g., a propynyl group, a butynyl group, a pentynyl group, etc.) are preferable, and particularly, for example, a lower alkynyl group having 3 or 4 carbon atoms (e.g., a propynyl group, a butynyl group, etc.), and the like are preferable.

As the “substituents” of the above-mentioned “aliphatic hydrocarbon group optionally having substituents”, for example, a heterocyclic group, an oxo group, a hydroxy group, a C₁₋₆ alkoxy group, a C₃₋₁₀ (particularly C₃₋₆) cycloalkyloxy group, a C₆₋₁₀ aryloxy group, a C₇₋₁₉ (particularly C₇₋₁₂) aralkyloxy group, a heterocyclic oxy group, a C₁₋₆ alkylthio group (sulfur atom may be oxidized), a C₃₋₁₀ (particularly C₃₋₆) cycloalkylthio group (sulfur atom may be oxidized), a C₆₋₁₀ arylthio group (sulfur atom may be oxidized), a C₇₋₁₉ (particularly C₇₋₁₂) aralkylthio group (sulfur atom may be oxidized), a heterocyclic thio group, a heterocyclic sulfinyl group, a heterocyclic sulfonyl group, a nitro group, a halogen atom, a cyano group, a carboxyl group, a C₁₋₁₀ (particularly C₁₋₆) alkoxy-carbonyl group, a C₃₋₆ cycloalkyloxy-carbonyl group, a C₆₋₁₀ aryloxy-carbonyl group, a C₇₋₁₉ (particularly C₇₋₁₂) aralkyloxy-carbonyl group, a heterocyclic oxycarbonyl group, a C₆₋₁₀ aryl-carbonyl group, C₁₋₆ alkanoyl group, C₃₋₅ alkenoyl group, a C₆₋₁₀ aryl-carbonyloxy group, a C₂₋₆ alkanoyloxy group, a C₃₋₅ alkenoyloxy group, a carbamoyl group optionally having substituents, a thiocarbamoyl group optionally having substituents, a carbamoyloxy group optionally having substituents, a C₁₋₆ arkanoylamino group, a C₆₋₁₀ aryl-carbonylamino group, a C₁₋₁₀ (particularly C₁₋₆) alkoxy-carboxamide group, a C₆₋₁₀ aryloxy-carboxamide group, a C₇₋₁₉ (particularly C₇₋₁₂) aralkyloxy-carboxamide group, a C₁₋₁₀ (particularly C₁₋₆) alkoxy-carbonyloxy group, a C₆₋₁₀ aryloxy-carbonyloxy group, a C₇₋₁₉ (particularly C₇₋₁₂) aralkyloxy-carbonyloxy group, a C₃₋₁₀ (particularly C₃₋₆)cycloalkyloxy-carbonyloxy group, a ureido group optionally having substituents, a C₆₋₁₀ aryl group optionally having substituents, etc. are used.

These substituents are substituted at substitutable positions in the above-mentioned “aliphatic hydrocarbon group”, wherein the substituents are not limited a single substituent but may be the same or different plural (2 to 4) substituents.

As the “C₁₋₆ alkoxy group”, for example, a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, a tert-butoxy group, an n-pentyloxy group, an n-hexyloxy group, etc. are used, as the “C₃₋₁₀ cycloalkyloxy group”, for example, a cyclopropyloxy group, a cyclohexyloxy group, etc. are used, as the “C₆₋₁₀ aryloxy group”, for example, a phenoxy group, a naphtyloxy group, etc. are used, as the “C₇₋₁₉ aralkyloxy group”, for example, a benzyloxy group, a 1-phenylethyloxy group, a 2-phenylethyloxy group, a benzhydryloxy group, a 1-naphthylmethyloxy group, etc. are used, as the “C₁₋₆ alkylthio group (sulfur atom may be oxidized)”, for example, a methylthio group, an ethylthio group, an n-propylthio group, an n-butylthio group, a methylsulfinyl group, a methylsulfonyl group, etc. are used, as the “C₃₋₁₀ cycloalkylthio group (the sulfur atom may be oxidized)”, for example, a cyclopropylthio group, a cyclohexylthio group, a cyclopentylsulfinyl group, a cyclohexylsulfonyl group, etc. are used, as the “C₆₋₁₀ arylthio group (sulfur atom may be oxidized)”, for example, a phenylthio group, a naphthylthio group, a phenylsulfinyl group, a phenylsulfonyl group, etc. are used, as the “C₇₋₁₉ aralkylthio group (sulfur atom may be oxidized)”, for example, a benzylthio group, a phenylethylthio group, a benzhydrylthio group, a benzylsulfinyl group, a benzylsulfonyl group, etc. are used, as the “halogen atom”, for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, etc. are used, as the “C₁₋₁₀ alkoxy-carbonyl group”, for example, a methoxycarbonyl group, an ethoxycarbonyl group, an n-propoxycarbonyl group, an isopropoxycarbonyl group, an n-butoxycarbonyl group, an isobutoxycarbonyl group, a tert-butoxycarbonyl group, etc. are used, as the “C₃₋₆ cycloalkyloxycarbonyl group”, for example, a cyclopropyloxycarbonyl group, a cyclopentyloxycarbonyl group, a cyclohexyloxycarbonyl group, a norbornyloxycarbonyl group, etc. are used, as the “C₆₋₁₀ aryloxy-carbonyl group”, for example, a phenoxycarbonyl group, a naphtyloxycarbonyl group, etc. are used, as the “C₇₋₁₉ aralkyloxy-carbonyl group”, for example, a benzyloxycarbonyl group, a benzhydryloxycarbonyl group, a 2-phenethyloxycarbonyl group, etc. are used, as the “C₆₋₁₀ aryl-carbonyl group”, for example, a benzoyl group, a naphtoyl group, a phenylacetyl group, etc. are used, as the “C₁₋₆ alkanoyl group”, for example, a formyl group, an acetyl group, a propionyl group, a butyryl group, a valeryl group, a pivaloyl group, etc. are used, as the “C₃₋₅ alkenoyl group”, for example, an acryloyl group, a crotonoyl group, etc. are used, as the “C₆₋₁₀ aryl-carbonyloxy group”, for example, a benzoyloxy group, a naphtoyloxy group, a phenylacetoxy group, etc. are used, as the “C₂₋₆ alkanoyloxy group”, for example, an acetoxy group, a propionyloxy group, a butyryloxy group, a valeryloxy group, a pivaloyloxy group, etc. are used, and as the “C₃₋₅ alkenoyloxy group”, for example, an acryloyloxy group, a crotonoyloxy group, etc. are used.

As the “carbamoyl group optionally having substituents”, for example, a carbamoyl group or a cyclic aminocarbonyl group, which may be substituted by 1 or 2 substituents selected from C₁₋₄ alkyl (e.g., methyl, ethyl, etc.), a phenyl, a C₁₋₇ acyl (e.g., acetyl, propionyl, benzoyl, etc.), a C₁₋₄ alkoxy-phenyl (e.g., methoxyphenyl, etc.), etc. are used, and specifically, for example, a carbamoyl group, an N-methylcarbamoyl group, an N-ethylcarbamoyl group, an N,N-dimethylcarbamoyl group, an N,N-diethylcarbamoyl group, an N-phenylcarbamoyl group, an N-acetylcarbamoyl group, an N-benzoylcarbamoyl group, an N-(p-methoxyphenyl)carbamoyl group, a 1-pyrrolidinylcarbonyl group, a piperidinocarbonyl group, a 1-piperazinylcarbonyl group, a morpholinocarbonyl group, etc. are used. As the “thiocarbamoyl group optionally having substituents”, for example, a thiocarbamoyl group which may be substituted by 1 or 2 substituents selected from C₁₋₄ alkyl (e.g., methyl, ethyl, etc.), phenyl, etc. are used, and specifically, for example, a thiocarbamoyl group, an N-methylthiocarbamoyl group, an N-phenylthiocarbamoyl group, etc. are used. As the “carbamoyloxy group optionally having substituents”, for example, a carbamoyloxy group which may be substituted by 1 or 2 substituents selected from C₁₋₄ alkyl (e.g., methyl, ethyl, etc.), phenyl, etc. are used, and specifically, for example, a carbamoyloxy group, an N-methylcarbamoyloxy group, an N,N-diethylcarbamoyloxy group, an N-ethylcarbamoyloxy group, an N-phenylcarbamoyloxy group, etc. are used.

As the “C₁₋₆ alkanoylamino group”, for example, an acetoamide group, a propionamide group, a butyroamide group, a valeroamide group, a pivaroamide group, etc. are used, as the “C₆₋₁₀ aryl-carbonylamino group”, for example, a benzamide group, a naphtoamide group, a phtalimide group, etc. are used, as the “C₁₋₁₀ alkoxy-carboxamide group”, for example, a methoxy-carboxamide (CH₃OCONH—) group, an ethoxycarboxamide group, a tert-butoxycarboxamide group, etc. are used, as the “C₆₋₁₀ aryloxy-carboxamide group”, for example, a phenoxycarboxamide (C₆H₅OCONH—) group, etc. are used, as the “C₇₋₁₀ aralkyloxy-carboxamide group”, for example, a benzyloxycarboxamide (C₆H₅CH₂OCONH—) group, a benzhydryloxycarboxamide group, etc. are used, as the “C₁₋₁₀ alkoxy-carbonyloxy group”, for example, a methoxycarbonyloxy group, an ethoxycarbonyloxy group, an n-propoxycarbonyloxy group, an isopropoxycarbonyloxy group, an n-butoxycarbonyloxy group, a tert-butoxycarbonyloxy group, an n-pentyloxycarbonyloxy group, an n-hexyloxycarbonyloxy group, etc. are used, as the “C₆₋₁₀ aryloxy-carbonyloxy group”, for example, a phenoxycarbonyloxy group, a naphthyloxycarbonyloxy group, etc. are used, as the “C₇₋₁₉ aralkyloxy-carbonyloxy group”, for example, a benzyloxycarbonyloxy group, a 1-phenylethyloxy-carbonyloxy group, a 2-phenylethyloxycarbonyloxy group, a benzhydryloxycarbonyloxy group, etc. are used, and as the “C₃₋₁₀ cycloalkyloxy-carbonyloxy group”, for example, a cyclopropyloxycarbonyloxy group, a cyclohexyloxycarbonyloxy group, etc. are used.

As the “ureido group optionally having substituents”, for example, a ureido group optionally substituted by 1 to 3 (preferably 1 or 2) substituents selected from a C₁₋₄ alkyl group (e.g., a methyl group, an ethyl group, etc.), a phenyl group, etc. are used, and, for example, a ureido group, a 1-methylureido group, a 3-methylureido group, a 3,3-dimethylureido group, a 1,3-dimethylureido group, a 3-phenylureido group, etc. are used.

When a heterocyclic group, a heterocyclic oxy group, a heterocyclic thio group, a heterocyclic sulfinyl group, a heterocyclic sulfonyl group or a heterocyclic oxycarbonyl group is used as the “substituents” of the “aliphatic hydrocarbon group optionally having substituents”, the heterocyclic group represents a group formed by excluding one hydrogen atom that binds to the heterocycle, and it represents, for example, a 5- to 8-membered cyclic (preferably 5- or 6-membered cyclic) group containing 1 to a few, preferably 1 to 4 hetero atoms such as a nitrogen atom (optionally oxidized), an oxygen atom, a sulfur atom, etc., or its condensed cyclic group. As these heterocyclic groups, for example, a pyrrolyl group, a pyrazolyl group, an imidazolyl group, a 1,2,3-triazolyl group, a 1,2,4-triazolyl group, a tetrazolyl group, a furyl group, a thienyl group, an oxazolyl group, an isoxazolyl group, a 1,2,3-oxadiazolyl group, a 1,2,4-oxadiazolyl group, a 1,2,5-oxadiazolyl group, a 1,3,4-oxadiazolyl group, a thiazolyl group, an isothiazolyl group, a 1,2,3-thiadiazolyl group, a 1,2,4-thiadiazolyl group, a 1,2,5-thiadiazolyl group, a 1,3,4-thiadiazolyl group, a pyridyl group, a pyridazinyl group, a pyrimidinyl group, a pyrazinyl group, an indolyl group, a pyranyl group, a thiopyranyl group, a dioxinyl group, a dioxolyl group, a quinolyl group, a pyrido[2,3-d]pyrimidyl group, a 1,5-, 1,6-, 1,7-, 1,8-, 2,6- or 2,7-naphthyridyl group, a thieno[2,3-d]pyridyl group, a benzopyranyl group, a tetrahydrofuryl group, a tetrahydropyranyl group, a dioxolanyl group, a dioxanyl group, etc. are used.

These heterocyclic groups may be substituted at substitutable positions by 1 to 3 substituents selected from a C₁₋₄ alkyl (e.g., methyl, ethyl, etc.), a hydroxy, an oxo, a C₁₋₄ alkoxy (e.g., methoxy, ethoxy, etc.), and the like.

As the “C₆₋₁₀ aryl group” of the “C₆₋₁₀ aryl group optionally having substituents”, for example, a phenyl group, a naphthyl group, etc. are used. The C₆₋₁₀ aryl group may be substituted at a substitutable position by a substituent selected from those exemplified as the “substituent” (except for an optionally substituted C₆₋₁₀ aryl group) of the “aliphatic hydrocarbon group optionally having substituents” described above. Such substituent is substituted at a substitutable position of the C₆₋₁₀ aryl group, wherein such substituent is not limited to a single substituent, but the same or different, more than one (2 to 4) substituents may be used.

In the “aliphatic hydrocarbon group optionally having substituents”, the substituent together with the aliphatic hydrocarbon group may form an optionally substituted condensed ring group, and as such condensed ring group, an indanyl group, a 1,2,3,4-tetrahydronaphthyl group, etc. are used. This condensed ring group may be substituted at a substitutable position by a substituent selected from those exemplified as the “substituent” of the “aliphatic hydrocarbon optionally having substituents” described above. Such substituent is substituted at a substitutable position of the condensed ring group, wherein the substituent is not limited to a single substituent, but the same or different, more than one (2 to 4) substituents may be used.

As R, R¹, R^(1a), R^(1b) and R^(1c), for example, a lower alkyl group having 1 to 6 carbon atoms (e.g., a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a tert-butoxycarbonylmethyl group, a hydroxyethyl group and the like) optionally having substituents, etc., are used. Of these, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, etc. are preferably used. Particularly, for example, a methyl group, an ethyl group, an n-propyl group and the like, are preferable, and particularly, an ethyl group, etc. is preferable.

As R² and R^(2a), for example, a hydrogen atom, a lower alkyl group having 1 to 6 carbon atoms (e.g., a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a tert-butoxycarbonylmethyl group, a hydroxyethyl group and the like), etc. are preferably used, and of these, a hydrogen atom, a methyl group, etc. are particularly preferably used and particularly, a hydrogen atom, etc. are preferably used.

As the “aromatic hydrocarbon group” of the “aromatic hydrocarbon group optionally having substituents” represented by R, an aromatic hydrocarbon group having 6 to 14 carbon atoms (e.g., a phenyl group, a naphthyl group, a biphenyl group, an anthryl group, an indenyl group and the like) and the like are preferable, and particularly, for example, an aryl group having 6 to 10 carbon atoms (e.g., phenyl and naphthyl groups, etc.) and the like are preferable and, of these, a phenyl group and the like are particularly preferable.

As the “substituent” of the “aromatic hydrocarbon group optionally having substituents” represented by R, for example, a halogen atom (e.g., fluorine, chlorine, bromine, iodine and the like), a lower (C₁₋₄) alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group and the like), a lower (C₁₋₄) alkoxy group (e.g., a methoxy group, an ethoxy group, a propoxy group, a butoxy group and the like), a lower (C₁₋₄) alkoxy-carbonyl group (e.g., a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, a butoxycarbonyl group and the like), a carboxyl group, a nitro group, a cyano group, a hydroxyl group, an acylamino group (e.g., an alkanoylamino group having 1 to 4 carbon atoms such as an acetylamino group, a propionylamino group, a butyrylamino group and the like, and the like), a cycloalkyl group having 3 to 6 carbon atoms (e.g., a cyclopropyl group, a cyclopentyl group and the like), an aryl group having 6 to 10 carbon atoms (e.g., a phenyl group, a naphthyl group, an indenyl group and the like), a halogeno-lower (C₁₋₄) alkyl group (e.g., a trifluoromethyl group, a trifluoroethyl group and the like), a halogeno-lower (C₁₋₄) alkoxy group (e.g., a trifluoromethoxy group, a 1,1,2,2-tetrafluoroethoxy group, a 2,2,3,3,3-pentafluoropropoxy group and the like), a lower (C₁₋₄) alkylthio group (e.g., a methylthio group, an ethylthio group, a propionylthio group and the like), a lower (C₁₋₄) alkylsulfonyl group (e.g., a methanesulfonyl group, an ethanesulfonyl group, a propanesulfonyl group and the like), a lower (C₁₋₄) alkanoyl group (e.g., a formyl group, an acetyl group, a propionyl group and the like), a 5-membered aromatic heterocyclic group (e.g., a 1,2,3-triazolyl group, a 1,2,4-triazolyl group, a tetrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, a thienyl group, a furyl group and the like), a carbamoyl group, a lower (C₁₋₄) alkyl-carbamoyl group (e.g., a methylcarbamoyl group, a dimethylcarbamoyl group, a propionylcarbamoyl group and the like), a lower (C₁₋₄) alkoxy-carbonyl-lower (C₁₋₄) alkyl-carbamoyl group (e.g., a butoxycarbonylmethylcarbamoyl group, an ethoxycarbonylmethylcarbamoyl group and the like), a 1,3-diacylguanidino-lower (C₁₋₄) alkyl group (e.g., 1,3-diacetylguanidinomethyl, 1,3-bis-tert-butoxycarbonylguanidino-methyl and the like) and the like are used, and a halogen atom (e.g., fluorine, chlorine, bromine, iodine atoms and the like), a lower (C₁₋₄) alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group and the like) and the like are preferably used, and a fluorine atom, a chlorine atom and a methyl group are more preferably used.

These substituents are substituted at substitutable positions of the aromatic hydrocarbon group, and the number of the substituents is preferably 1 to 5, more preferably 1 to 3, most preferably 1 or 2. When two or more of such substituents are present, they may be the same or different.

The “heterocyclic group” in the “heterocyclic group optionally having substituents” represented by R means, for example, a 5- to 8-membered ring (preferably 5- or 6-membered ring) group having 1 to several, preferably 1 to 4, hetero atoms, such as a nitrogen atom (optionally oxidized), an oxygen atom, a sulfur atom and the like, or its condensed ring group.

As these heterocyclic groups, for example, a pyrrolyl group, a pyrazolyl group, an imidazolyl group, a 1,2,3-triazolyl group, a 1,2,4-triazolyl group, a tetrazolyl group, a furyl group, a thienyl group, an oxazolyl group, an isoxazolyl group, a 1,2,3-oxadiazolyl group, a 1,2,4-oxadiazolyl group, a 1,2,5-oxadiazolyl group, a 1,3,4-oxadiazolyl group, a thiazolyl group, an isothiazolyl group, a 1,2,3-thiadiazolyl group, a 1,2,4-thiadiazolyl group, a 1,2,5-thiadiazolyl group, a 1,3,4-thiadiazolyl group, a pyridyl group, a pyridazinyl group, a pyrimidinyl group, a pyrazinyl group, an indolyl group, a pyranyl group, a thiopyranyl group, a dioxinyl group, a dioxolyl group, a quinolyl group, a pyrido[2,3-d]pyrimidinyl group, 1,5-, 1,6-, 1,7-, 1,8-, 2,6- or 2,7-naphthyridyl group, a thieno[2,3-d]pyridyl group, a benzopyranyl group, a tetrahydrofuryl group, a tetrahydropyranyl group, a dioxolanyl group, a dioxanyl group, etc. are used.

These heterocyclic groups may be substituted at substitutable positions by 1 to 3 substituents selected from C₁₋₄ alkyl (e.g., methyl, ethyl, etc.), hydroxy, oxo, C₁₋₄ alkoxy (e.g., methoxy, ethoxy, etc.), and the like.

As the “aromatic hydrocarbon group” of the “aromatic hydrocarbon group optionally having substituents” represented by Ar and Ar^(a), an aromatic hydrocarbon group having 6 to 14 carbon atoms (e.g., a phenyl group, a naphthyl group, a biphenyl group, an anthryl group, an indenyl group and the like) and the like are preferable, and particularly for example, an aryl group having 6 to 10 carbon atoms (e.g., phenyl and naphthyl groups etc.) and the like are preferable and, of these, a phenyl group and the like are particularly preferable.

As the “substituent” of the “aromatic hydrocarbon group optionally having substituents” represented by Ar and Ar^(a), for example, a halogen atom (e.g., fluorine, chlorine, bromine, iodine and the like), a lower (C₁₋₄) alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group and the like), a lower (C₁₋₄) alkoxy group (e.g., a methoxy group, an ethoxy group, a propoxy group, a butoxy group and the like), a lower (C₁₋₄) alkoxycarbonyl group (e.g., a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, a butoxycarbonyl group and the like), a carboxyl group, a nitro group, a cyano group, a hydroxyl group, an acylamino group (e.g., an alkanoylamino group having 1 to 4 carbon atoms such as an acetylamino group, a propionylamino group, a butyrylamino group and the like, and the like), a cycloalkyl group having 3 to 6 carbon atoms (e.g., a cyclopropyl group, a cyclopentyl group and the like), an aryl group having 6 to 10 carbon atoms (e.g., a phenyl group, a naphthyl group, an indenyl group and the like), a halogeno-lower (C₁₋₄) alkyl group (e.g., a trifluoromethyl group, a trifluoroethyl group and the like), a halogeno-lower (C₁₋₄) alkoxy group (e.g., a trifluoromethoxy group, a 1,1,2,2-tetrafluoroethoxy group, a 2,2,3,3,3-pentafluoropropoxy group and the like), a lower (C₁₋₄) alkylthio group (e.g., a methylthio group, an ethylthio group, a propionylthio group and the like), a lower (C₁₋₄) alkylsulfonyl group (e.g., a methanesulfonyl group, an ethanesulfonyl group, a propanesulfonyl group and the like), a lower (C₁₋₄) alkanoyl group (e.g., a formyl group, an acetyl group, a propionyl group and the like), a 5-membered aromatic heterocyclic group (e.g., a 1,2,3-triazolyl group, a 1,2,4-triazolyl group, a tetrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a thiadiazolyl group, a thienyl group, a furyl group and the like), a carbamoyl group, a lower (C₁₋₄) alkyl-carbamoyl group (e.g., a methylcarbamoyl group, a dimethylcarbamoyl group, a propionylcarbamoyl group and the like), a lower (C₁₋₄) alkoxy-carbonyl-lower (C₁₋₄) alkyl-carbamoyl group (e.g., a butoxycarbonylmethylcarbamoyl group, an ethoxycarbonylmethylcarbamoyl group and the like), a 1,3-diacylguanidino-lower (C₁₋₄) alkyl group (e.g., 1,3-diacetylguanidinomethyl, 1,3-bis-tert-butoxycarbonylguanidinomethyl and the like) and the like are used, and a halogen atom (e.g., fluorine, chlorine, bromine, iodine atoms and the like), a lower (C₁₋₄) alkyl group (e.g., a methyl group, an ethyl group, a propyl group, a butyl group and the like) and the like are preferably used, and a fluorine atom, a chlorine atom and a methyl group are more preferably used.

These substituents are substituted at substitutable positions of the aromatic hydrocarbon group, and the number of the substituents is preferably 1 to 5, more preferably 1 to 3, most preferably 1 or 2. When two or more of such substituents are present, they may be the same or different.

Typically, as Ar and Ar^(a), for example, a phenyl group, a halogenophenyl group, a lower (C₁₋₄) alkylphenyl group, a lower (C₁₋₄) alkoxyphenyl group, a lower (C₁₋₄) alkoxycarbonylphenyl group, a carboxylphenyl group, a nitrophenyl group, a cyanophenyl group, a halogeno-lower (C₁₋₄) alkylphenyl group, a halogeno-lower (C₁₋₄) alkoxyphenyl group, a lower (C₁₋₄) alkanoylphenyl group, a 5-membered aromatic heterocycle-substituted phenyl group, a lower (C₁₋₄) alkoxy-carbonyl-lower (C₁₋₄) alkyl-carbamoylphenyl group, 1,3-diacylguanidino-lower (C₁₋₄) alkylphenyl group, a halogen- and lower (C₁₋₄) alkyl-substituted phenyl group, a halogen- and lower (C₁₋₄) alkoxycarbonyl-substituted phenyl group, a halogen- and cyano-substituted phenyl group, a halogen- and 5-membered aromatic heterocycle-substituted phenyl group, a halogen- and lower (C₁₋₄) alkoxy-carbonyl-lower (C₁₋₄) alkyl-carbamoyl-substituted phenyl group and the like are used.

As Ar and Ar^(a), a halogenophenyl group, a lower (C₁₋₄) alkylphenyl group, a halogen- and lower (C₁₋₄) alkoxycarbonyl-substituted phenyl and the like are preferably used.

As Ar and Ar^(a), a group represented by the formula:

wherein R⁴ and R⁵ are the same or different and each represents a halogen atom or a lower alkyl group, and n is an integer of 0 to 2, are more preferable, in which a group wherein at least one of R⁴ and R⁵ is a halogen atom is still more preferable.

As the halogen atom represented by R⁴ and R⁵, a fluorine atom or a chlorine atom is preferable.

As the halogenophenyl group, for example, a 2,3-difluorophenyl group, a 2,3-dichlorophenyl group, a 2,4-difluorophenyl group, a 2,4-dichlorophenyl group, a 2,5-difluorophenyl group, a 2,5-dichlorophenyl group, a 2,6-difluorophenyl group, a 2,6-dichlorophenyl group, a 3,4-difluorophenyl group, a 3,4-dichlorophenyl group, a 3,5-difluorophenyl group, a 3,5-dichlorophenyl group, a 2-fluorophenyl group, a 2-chlorophenyl group, a 3-fluorophenyl group, a 3-chlorophenyl group, a 4-fluorophenyl group, a 4-chlorophenyl group, a 2-fluoro-4-chlorophenyl group, a 2-chloro-4-fluorophenyl group, a 4-bromo-2-fluorophenyl group, a 2,3,4-trifluorophenyl group, a 2,4,5-trifluorophenyl group, a 2,4,6-trifluorophenyl and the like are used.

As the lower (C₁₋₄) alkylphenyl group, for example, a 2-ethylphenyl group, a 2,6-diisopropylphenyl group and the like are preferably used, and as the lower (C₁₋₄) alkoxyphenyl group, for example, a 4-methoxyphenyl and the like are preferably used.

As the lower (C₁₋₄) alkoxy-carbonylphenyl group, for example, a 2-ethoxycarbonylphenyl group, a 2-methoxycarbonylphenyl group, a 4-methoxycarbonylphenyl group and the like are preferably used, and as the halogeno-lower (C₁₋₄) alkylphenyl group, for example, a 2-trifluoromethylphenyl group and the like are preferably used, and as the halogeno-lower (C₁₋₄) alkoxyphenyl group, for example, a 2-trifluoromethoxyphenyl group, a 4-(2,2,3,3,3-pentafluoropropoxy)phenyl group and the like are preferably used.

As the lower (C₁₋₄) alkanoylphenyl group, for example, a 2-acetylphenyl group and the like are preferably used, and as the 5-membered aromatic heterocycle-substituted phenyl group, for example, a 4-(2H-1,2,3-triazol-2-yl)phenyl group, a 4-(2H-tetrazol-2-yl)phenyl group, a 4-(1H-tetrazol-1-yl)phenyl group, a 4-(1H-1,2,3-triazol-1-yl)phenyl group and the like are preferably used, and as the lower (C₁₋₄) alkoxy-carbonyl-lower (C₁₋₄) alkyl-carbamoylphenyl group, for example, a 4-(N-ethoxycarbonylmethylcarbamoyl)phenyl group and the like are preferably used, and as the 1,3-diacylguanidino-lower (C₁₋₄) alkylphenyl group, for example, a 4-(1,3-bis-tert-butoxycarbonylguanidinomethyl)phenyl group and the like are preferably used.

As the phenyl group substituted by halogen and lower (C₁₋₄) alkyl, for example, a 2-fluoro-4-methylphenyl group, a 2-chloro-4-methylphenyl group, a 4-fluoro-2-methylphenyl group and the like are preferably used, and as the phenyl group substituted by halogen and lower (C₁₋₄) alkoxy-carbonyl, for example, a 2-chloro-4-methoxycarbonylphenyl group and the like are preferably used, and the phenyl group substituted by halogen and cyano, a 2-chloro-4-cyanophenyl group and the like are preferably used, and as the phenyl group substituted by halogen and 5-membered aromatic heterocycle, for example, a 2-fluoro-4-(1H-1,2,4-triazol-1-yl)phenyl group and the like are preferably used, and as the phenyl group substituted by halogen and lower (C₁₋₄) alkoxy-carbonyl-lower (C₁₋₄) alky-carbamoyl, for example, a 2-chloro-4-(N-tert-butoxycarbonylmethylcarbamoyl)phenyl group, a 2-chloro-4-(N-ethoxycarbonylmethylcarbamoyl)phenyl group and the like are preferably used.

More specifically, as Ar and Ar^(a), a phenyl group, a phenyl group substituted by 1 to 3 (particularly 1 or 2) halogen atoms (e.g., a 2,3-difluorophenyl group, a 2,3-dichlorophenyl group, a 2,4-difluorophenyl group, a 2,4-dichlorophenyl group, a 2,5-difluorophenyl group, a 2,5-dichlorophenyl group, a 2,6-difluorophenyl group, a 2,6-dichlorophenyl group, a 3,4-difluorophenyl group, a 3,4-dichlorophenyl group, a 3,5-difluorophenyl group, a 3,5-dichlorophenyl group, a 4-bromo-2-fluorophenyl group, a 2-fluorophenyl group, a 2-chlorophenyl group, a 3-fluorophenyl group, a 3-chlorophenyl group, a 4-fluorophenyl group, a 4-chlorophenyl group, a 2-fluoro-4-chlorophenyl group, a 2-chloro-4-fluorophenyl group, a 2,3,4-trifluorophenyl group, a 2,4,5-trifluorophenyl group and the like), a phenyl group substituted by halogen and lower (C₁₋₄) alkyl (e.g., a 2-chloro-4-methylphenyl group, a 4-fluoro-2-methylphenyl group and the like), etc. are preferable. Of these, a phenyl group substituted by 1 to 3 (particularly 1 or 2) halogen atoms (e.g., a 2,3-dichlorophenyl group, a 2,4-difluorophenyl group, a 2,4-dichlorophenyl group, a 2,6-diclorophenyl group, a 2-fluorophenyl group, a 2-chlorophenyl group, a 3-chlorophenyl group, a 2-chloro-4-fluorophenyl group, a 2,4,5-trifluorophenyl group and the like), a phenyl group substituted by halogen and lower (C₁₋₄) alkyl (e.g., a 2-chloro-4-methylphenyl group, a 4-fluoro-2-methylphenyl group and the like), etc. are preferable. Particularly, a 2,4-difluorophenyl group, a 2-chlorophenyl group, a 2-chloro-4-fluorophenyl group, a 2-chloro-4-methylphenyl group and the like are preferable, and a 2,4-difluorophenyl group, a 2-chloro-4-fluorophenyl group and the like are preferable.

In this specification, the ring A¹ represents a cycloalkene optionally substituted by 1 to 4 substituents selected from the group consisting of (i) an aliphatic hydrocarbon group optionally having substituents, (ii) an aromatic hydrocarbon group optionally having substituents, (iii) a group represented by the formula —OR¹ (wherein R¹ is as defined above) and (iv) a halogen atom, and a cycloalkene optionally substituted by 1 to 4 substituents selected from the group consisting of (i) an aliphatic hydrocarbon group optionally having substituents, (ii) an aromatic hydrocarbon group optionally having substituents and (iv) a halogen atom are preferable.

In this specification, the ring A² represents a cycloalkene substituted by 1 to 4 substituents selected from the group consisting of (i) an aliphatic hydrocarbon group optionally having substituents, (ii) an aromatic hydrocarbon group optionally having substituents, (iii) a group represented by the formula —OR¹ (wherein R¹ is as defined above) and (iv) a halogen atom, and a cycloalkene substituted by 1 to 4 substituents selected from the group consisting of (i) an aliphatic hydrocarbon group optionally having substituents, (ii) an aromatic hydrocarbon group optionally having substituents and (iv) a halogen atom are preferable.

These substituents are substituted on substitutable carbon atoms in the ring A¹ and ring A², and when the ring A¹ or A² is substituted by two or more of such substituents, the substituents may be the same or different. A single carbon atom may be substituted by two substituents and different carbon atoms may be substituted by two or more substituents.

As the “aliphatic hydrocarbon group optionally having substituents” as a substituent on the ring A¹ and ring A², for example, the same those as the “aliphatic hydrocarbon group optionally having substituents” represented by R, R¹, R^(1a), R^(1b) and R^(1c) described above may be used.

As the “aromatic hydrocarbon group optionally having substituents” as a substituent on the ring A¹ and ring A², for example, the same those as the “aromatic hydrocarbon group optionally having substituents” represented by Ar and Ar^(a) described above may be used.

As the “heterocyclic group optionally having substituents” as a substituent on the ring A¹ and ring A², for example, those similar to the “heterocyclic group” which is a “substituent” on the “aliphatic hydrocarbon group optionally having substituents” represented by R, R¹, R^(1a), R^(1b) and R^(1c) described above may be used.

As the substituents for the ring A¹ and ring A², 1 or 2 C₁₋₆ alkyl groups (e.g., a C₁₋₄ alkyl group such as a methyl group, a tert-butyl group, etc.), a phenyl group, a halogen atom (e.g., fluorine, chlorine, bromine, iodine, etc.), etc. are preferably used.

The group represented by the formula:

wherein n is as defined above, represents a group represented by the formula:

wherein n is as defined above, preferably a group represented by the formula:

wherein n is as defined above.

The group represented by the formula:

wherein n is as defined above, represents a group represented by the formula:

wherein n is as defined above, preferably a group represented by the formula:

wherein n is as defined above, and a group represented by the formula:

represents a group represented by the formula:

preferably a group represented by the formula:

As the integer of 1 to 4 represented by n, 1 to 3 is preferable and 2 is particularly preferable.

As the compound represented by the formula (Iaa), the compound represented by the formula (Ibb) is preferable, and as the compound represented by the formula (Ia), the compound represented by the formula (Ib) is preferable.

As the compound represented by the formula (Ibb), the compound represented by the formula (Inn) is preferable, and as the compound represented by the formula (Ib), the compound represented by the formula (In) is preferable.

As the compounds represented by the formulas (Ibb) and (Ib), a compound wherein R¹ is a lower alkyl group optionally having substituents, R² is a hydrogen atom or a lower alkyl group, Ar is a phenyl group optionally having substituents, and n is 1, 2 or 3 is preferable, and a compound wherein R¹ is a lower alkyl group optionally having substituents, R² is a hydrogen atom, Ar is a phenyl group substituted by a halogen atom, and n is 2 is more preferable.

As the compounds represented by the formulas (Icc) and (Ic), a compound wherein Ar is a phenyl group optionally having substituents, and n is 2 is preferable.

As the leaving group represented by X¹, for example, a halogen atom (e.g., chlorine, bromine, iodine, etc.), etc. are preferable and a chlorine atom is particularly preferable.

When the compounds represented by the formulas (I), (Iaa), (Ibb), (Icc), (Ia), (Ib), (Ic), (Id), (Ie), (If) and (Ig) have stereoisomers, all such stereoisomers and mixtures thereof are encompassed in the present invention.

When a compound represented by the formula (Iaa) is a compound represented by the formula (Icc) or (Inn), when a compound represented by the formula (Ia) is a compound represented by the formula (Ic) or (In), when a compound represented by the formula (Ie) is a compound represented by the formula (Ik) or (Ip), when a compound represented by the formula (Id) is a compound represented by the formula (Ir), and when a compound represented by the formula (Ig) is a compound represented by the formula (It), then each compound can exist as an optical isomer with regard to the asymmetric carbon atom in a cycloalkene or cyclohexene ring, and any of such optical isomers and mixtures thereof are included in the invention.

A compound represented by the formula (I) or (Ia) is used, which is specifically the compound in Reference Example B to be mentioned below, and the like. Of such compounds, (A) d-ethyl 6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, (B) ethyl 6-[N-(2-chlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, (C) ethyl 6-[N-(2-chloro-4-methylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, (D) d-ethyl 6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate and salts thereof are preferable.

The compounds (I), (Iaa), (Ia), (Ib), (Ic), (Id), (Ie), (If), (Ig), (Ibb) and (Icc) (hereinafter to be simply referred to as an inventive Compound), which is used for the composition of the present invention, may be converted into a salt with an inorganic base, organic base, inorganic acid, organic acid, basic or acidic amino acid, and the like. The salt with an inorganic base may, for example, be used an alkaline metal salt such as sodium and potassium salts, etc.; an alkaline earth metal salt such as calcium and magnesium salts, etc.; aluminum and ammonium salts, and the like, and a salt with an organic base may, for example, be used a salt with trimethylamine, triethylamine, pyridine, picoline, ethanolamine, diethanolamine, triethanolamine, dicyclohexylamine, N,N′-dibenzylethylenediamine, etc. A salt with an inorganic acid may, for example, be used a salt with hydrochloric acid, hydrobromic acid, nitric acid, sulfuric acid, phosphoric acid, etc., and a salt with an organic acid may, for example, be used a salt with formic acid, acetic acid, trifluoroacetic acid, fumaric acid, oxalic acid, tartaric acid, maleic acid, citric acid, succinic acid, malic acid, methanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, etc. A salt with a basic amino acid may, for example, be used a salt with arginine, lysine, ornithine, etc., and a salt with acidic amino acid may, for example, be used a salt with aspartic acid, glutamic acid, etc.

A prodrug for an inventive Compound or a salt thereof is a compound which is converted into an inventive Compound under a physiological condition in vivo as a result of a reaction with an enzyme, gastric acid etc., thus a compound undergoing an enzymatic oxidation, reduction, hydrolyzation etc. to convert into an inventive Compound and a compound subjected to hydrolysis and the like by gastric acid etc. to convert into an inventive Compound. A prodrug for an inventive Compound may, be a compound obtained by subjecting an amino group in an inventive Compound to an acylation, alkylation or phosphorylation (e.g., a compound obtained by subjecting an amino group in an inventive Compound to an eicosanoylation, alanylation, pentylaminocarbonylation, (5-methyl-2-oxo-1,3-dioxolen-4-yl)methoxycarbonylation, tetrahydrofuranylation, pyrrolidylmethylation, pivaloyloxymethylation, tert-butylation, etc.); a compound obtained by subjecting a hydroxy group in an inventive Compound to an acylation, alkylation, phosphorylation and boration (e.g., a compound obtained by subjecting a hydroxy group in an inventive Compound to an acetylation, palmitoylation, propanoylation, pivaloylation, succinylation, fumarylation, alanylation, dimethylaminomethylcarbonylation, etc.); a compound obtained by subjecting a carboxyl group in an inventive Compound to an esterification or amidation (e.g., a compound obtained by subjecting a carboxyl group in an inventive Compound to an ethylesterification, phenylesterification, carboxymethylesterification, dimethylaminomethylesterification, pivaloyloxymethylesterification, ethoxycarbonyloxyethylesterification, phthalidylesterification, (5-methyl-2-oxo-1,3-dioxolen-4-yl)methylesterification, cyclohexyloxycarbonylethylesterification and methylamidation, etc.) and the like. Any of these compounds can be produced from an inventive Compound by a method known per se.

A prodrug for an inventive Compound may also be one which is converted into an inventive Compound under a physiological condition, such as those described in “IYAKUHIN no KAIHATSU (Development of Pharmaceuticals)”, Vol. 7, Design of Molecules, p. 163–198, Published by HIROKAWA SHOTEN (1990).

The inventive Compound, a salt thereof and a prodrug thereof can be produced according to a method known per se, for example, a production method described in WO99/46242 or a method analogous thereto.

The inventive Compound, a salt thereof and a prodrug hereof may be a hydrate or non-hydrate.

The inventive Compound, a salt thereof and a prodrug thereof may be labeled with an isotope (e.g., ³H, ¹⁴C, ³⁵S, ¹²⁵I etc.) and the like.

According to the composition of the present invention, the inventive Compound, a salt thereof and a prodrug thereof having poor water solubility can be used effectively as a component of the composition constituted by an emulsifier.

The inventive Compound, a salt thereof and a prodrug thereof may exist in a state of a liquid or solid in an oil phase, and the composition of the present invention is an oil-in-water type (O/W type) or S/O/W type emulsion composition.

The composition of the present invention can be produced using an emulsifier.

The composition of the present invention consists of disperse phase particles containing an oil component, an emulsifier and the inventive Compound, a salt thereof or a prodrug thereof, and water in which the disperse phase particles are dispersed.

As the oil component, any pharmaceutically acceptable fats and oils generally used for the preparation of fat emulsion in the field of pharmaceutical technology can be used. Examples of the fats and oils include vegetable oil, partial hydrogenated vegetable oils, fats and oils obtainable by transesterification (simple glycerides and mixed glycerides), and glycerol esters of medium chain fatty acids.

The aforementioned fats and oils include, a glycerol ester of a fatty acid having about 6 to 30 carbon atoms, preferably about 6 to 22 carbon atoms. Examples of the aforementioned fatty acid include saturated fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid and the like; unsaturated fatty acids such as palmitooleic acid, oleic acid, linoleic acid, arachidonic acid, eicosapentanoic acid, docosahexanoic acid and the like.

Of the vegetable oils, preferable examples of the oil component include soybean oil, cottonseed oil, rapeseed oil, peanut oil, safflower oil, sesame oil, rice bran oil, corn germ oil, sunflower oil, poppy oil, olive oil and the like. Of these vegetable oils, soybean oil and the like are preferably used.

As the fats and oils, a medium chain triglyceride having about 6 to 14 carbon atoms, preferably about 8 to 12 carbon atoms, can be also used. Preferable medium chain glyceride includes, for example, caprylic/capric triglyceride such as “Migriol 810”, “Migriol 812” (both trade names, manufactured by Huls Co., Ltd., available from Mitsuba Trading Co., Ltd.), a glyceryl tricaprylate (tricaprylin) such as “Panasate 800” (trade name, manufactured by NOF Corporation, Japan) and the like.

The amount of the oil component to be used for the composition of the present invention is, for example, about 1 to about 30 wt %, preferably about 2 to about 25 wt %, and more preferably about 2.5 to about 22.5 wt %, of the entire composition.

As the above-mentioned emulsifier, any pharmaceutically acceptable emulsifier can be used. Particularly, pharmaceutically acceptable phospholipids and non-ionic surfactants are preferable. The emulsifiers can be used alone or in combination of two or more thereof.

The phospholipids include, for example, naturally-occurring phospholipids (e.g., egg yolk lecithin, soybean lecithin etc.), hydrogenation products thereof and phospholipids obtained by synthesis (e.g., phosphatidylcholine, phosphatidylethanolamine, phosphatidic acid, phosphatidylserine, phosphatidylinositol, phosphatidylglycerol etc.) and the like. Of these phospholipids, egg yolk lecithin, soybean lecithin and egg yolk- and soybean-derived phosphatidylcholines are preferable. Particularly preferable phospholipid is lecithin.

The non-ionic surfactant is exemplified by polymer surfactants having a molecular weight of about 800–20000, such as polyoxyethylene-polyoxypropylene copolymer, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, hydrogenated castor oil polyoxyethylene derivative, polyoxyethylene sorbitan derivative, polyoxyethylene sorbitol derivative, polyoxyethylene alkyl ether sulfate and the like.

The amount of the emulsifier to be used for the composition of the present invention is generally about 0.1–about 10% (W/V), preferably about 0.2–about 7% (W/V), more preferably about 0.5–about 5% (W/V), of the entire composition.

In the composition of the present invention, the proportion of the emulsifier relative to the oil component is, for example, about 0.1–about 150 wt %, preferably about 0.5–about 125 wt %, more preferably about 1–about 100 wt %. The emulsifier is often used in a proportion of generally about 1–20 about 15 wt %, particularly about 1–about 10 wt %, of the oil component.

The composition of the present invention can be prepared by mixing a disperse phase component consisting of the inventive Compound, a salt thereof or a prodrug thereof (main drug), the oil component and emulsifier, and water. Where necessary, a stabilizer for improving the stability of the aforementioned main drug, an isotonic agent for adjusting the osmotic pressure, an emulsifying-auxiliaries to enhance emulsifying capability, an emulsifying stabilizer for enhancing the stability of the emulsifier and the like may be added.

Examples of the stabilizer include, for example, antioxidants (for example, ascorbic acid, tocopherol, sorbic acid, retinol and the like), chelating agents (for example, citric acid, tartaric acid and the like) and the like. The stabilizer is used in an amount of generally about 0.00001–about 10% (W/V), preferably about 0.0001–about 5% (W/V), relative to the entire composition of the present invention.

The isotonic agent includes, for example, glycerol, sugar alcohols, monosaccharides, disaccharides, amino acid, dextran, albumin and the like. These isotonic agents may be use alone or in combination.

Examples of the emulsifying-auxiliaries include fatty acids having about 6 to 30 carbon atoms, salts of these fatty acids, monoglycerides of the fatty acids, and the like. Examples of the aforementioned fatty acid include caproic acid, capric acid, caprylic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, palmitooleic acid, oleic acid, linolic acid, arachidonic acid, eicosapentanoic acid, docosahexanoic acid and the like. Examples of the salts thereof include alkali metal salts such as sodium salt, potassium salt etc., calcium salt and the like.

Examples of the emulsifying stabilizer include cholesterol, cholesterol esters, tocopherol, albumin, amide derivatives of fatty acid, polysaccharides, fatty acid ester derivatives of polysaccharides and the like.

The concentration of the inventive Compound, a salt thereof or a prodrug thereof in the composition of the present invention varies depending on the pharmacological activities or kinetics in blood of the compound, and is generally about 0.001–about 5% (W/V), preferably about 0.01–about 2% (W/V), more preferably about 0.1–about 0.5% (W/V). It is also possible to set the content of the inventive Compound, a salt thereof or a prodrug thereof in the composition of the present invention to about 1–about 5000 mg, preferably about 10–about 2000 mg, preferably about 100–about 1000 mg, per 100 ml of the composition. Furthermore, the content of the inventive Compound, a salt thereof or a prodrug thereof in the composition of the present invention can be adjusted to about 0.001–about 95 wt %, preferably about 0.01–about 30 wt %, more preferably about 0.1–about 3 wt %, based on the total volume of the composition.

The proportion (wt %) of the inventive Compound, a salt thereof or a prodrug thereof relative to the disperse phase comprising an oil component and an emulsifier is generally about 0.0047–about 24%, preferably about 0.047–about 9.4%, more preferably about 0.47–about 2.4%.

The composition of the present invention is adjusted to have a pH of not more than about 6, more specifically about 3–about 6, preferably about 3–about 5.5, more preferably about 3–about 5, still more preferably about 3–about 4.

The pH adjusting agent is exemplified by phosphoric acid, carbonic acid, citric acid, hydrochloric acid, sodium hydroxide and the like, with particular preference given to hydrochloric acid, sodium hydroxide and the like.

The composition of the present invention is preferably used as, for example, an injectable composition.

The composition of the present invention can be generally produced according to a known method or a method analogous thereto. The emulsification can be conducted by a conventional emulsifying technique. It is preferable to dissolve or disperse the inventive Compound, a salt thereof or a prodrug thereof in an oil component beforehand. For example, a mixture of (1) a disperse phase containing the oil component and an emulsifier, and (2) the inventive Compound, a salt thereof or a prodrug thereof is dispersed in water to give a composition consisting of an O/W type or S/O/W type emulsion.

Furthermore, preferable examples of the method include a method comprising homogenizing a heterogeneous mixture containing a mixture of the main drug, an oil component, an emulsifier and, where necessary, an additive such as an isotonic agent and the like and water in an emulsifying apparatus to give a roughly emulsified emulsion, followed by, if necessary, addition of water, further homogenizing the resulting rough emulsion using the aforementioned emulsifying apparatus and removing large particles by a filtering means such as a filter and the like to give an oil-in-water composition. The aforementioned mixture is generally heated to, for example, about 30–about 90° C., preferably about 40–about 80° C., to dissolve or disperse the main drug. Examples of the emulsifying apparatus for the emulsification of the heterogeneous mixture containing the aforementioned mixture and water include a conventional apparatus such as a homogenizer including a pressure jetting homogenizer, an ultrasonic homogenizer and the like, and a homomixer such as a high-rate mixer and the like. For removing large particles having a particle size of not less than about 5 μm, preferably not less than about 1 μm, more preferably not less than about 0.5 μm, the homogenized emulsion is frequently subjected to a filtering means such as a filter.

In the composition of the present invention, the particle size of the disperse phase wherein the inventive Compound, a salt thereof or a prodrug thereof is dissolved, is, for example, mostly about 0.01–about 5 μm (about 10–about 5000 nm), preferably about 0.02–about 1 μm (about 20–about 1000 nm), more preferably about 0.03–about 0.5 μm (about 30–about 500 nm).

In view of the stability of the emulsion and biodistribution after administration, the mean particle size of the disperse phase wherein the inventive Compound, a salt thereof or a prodrug thereof is dissolved, is, for example, about 25–about 500 nm, preferably about 50–about 300 nm, more preferably about 100–about 300 nm (particularly about 190–about 260 nm).

A pyrogen can be removed from the composition of the present invention according to a method known per se.

The composition of the present invention is subjected to nitrogen gas displacement, sterilized and sealed as necessary.

Since the composition of the present invention has a pH adjusted to not more than about 6, the inventive Compound, a salt thereof and a prodrug thereof, as well as the composition of the present invention show superior stability even after sterilization in an autoclave etc.

By controlling the particle size of the disperse phase particle, in the composition of the present invention, moreover, the concentration of the inventive Compound, a salt thereof and a prodrug thereof can be increased, retentivity in blood, blood vessel permeability and migration performance into inflammatory site can be enhanced. Therefore, the pharmacokinetics and biodistribution of the inventive Compound, a salt thereof and a prodrug thereof can be improved, thereby enabling targeting, which in turn leads to more effective administration of a drug with less side effect. Thus, the composition of the present invention is useful for the treatment of target disease particularly by an intravenous administration.

Since an inventive Compound, a salt thereof and a prodrug thereof have low toxicity, an nitric oxide (NO) production-inhibitory effect and an inhibitory effect on the production of an inflammatory cytokine such as TNF-α, IL-1, IL-6, etc., the composition of the present invention, which contains the inventive Compound, a salt thereof or a prodrug thereof is useful as a therapeutic and/or prophylactic agent in a mammal (e.g., cat, cattle, dog, horse, goat, monkey, human and the like) against diseases such as cardiac disease, autoimmune disease, inflammatory disease, central nervous system disease, infectious disease, sepsis, septic shock and the like, including, for example, ichorrhemia, endotoxin shock, exotoxin shock, cardiac deficiency, shock, hypotension, rheumatoid arthritis, osteoarthritis, gastritis, ulcerative colitis, peptic ulcer, stress-induced gastric ulcer, Crohn's disease, autoimmune disease, post-transplant tissue failure and rejection, postischemic re-perfusion failure, acute coronary microvascular embolism, shock-induced vascular embolism (disseminated intravascular coagulation (DIC) and the like), ischemic cerebral disorder, arterial sclerosis, pernicious anemia, Fanconi's anemia, drepanocythemia, pancreatitis, nephrose syndrome, nephritis, renal failure, insulin-dependent diabetes, insulin-independent diabetes, hepatic porphyria, alcoholism, Parkinson's disease, chronic leukemia, acute leukemia, tumor, myeloma, alleviation of side effects caused by anticancer agents, infantile and adult respiratory distress syndrome, pulmonary emphysema, dementia, Alzheimer's disease, multiple sclerosis, vitamin E deficiency, aging, sunburn, muscular dystrophy, myocarditis, cardiomyopathy, myocardial infarction, myocardial post infarction syndrome, osteoporosis, pneumonia, hepatitis, psoriasis, pain, cataract, influenza infection, malaria, human immunodeficiency virus (HIV) infection, radiation hazard, burn, in vitro fertilization efficiency, hypercalcemia, tonic spondylitis, osteopenia, bone Behcet's disease, osteomalacia, fracture, acute bacterial meningitis, Helicobactor pylori infection, invasive staphylococcal infection, tuberculosis, systemic mycosis, herpes simplex virus infection, varicella-helpes zoster virus infection, human papilloma virus infection, acute viral encephalitis, encephalitis, asthma, atopic dermatitis, allergic rhinitis, reflux esophargitis, fever, hyper cholesteremia, hyperglycemia, hyperlipidemia, diabetic complication, diabetic renal disease, diabetic neuropathy, diabetic retinopathy, gout, astric atony, hemorrhoid, systemic lupus erythematosus, spinal damage, insomnia, schizophrenia, epilepsy, cirrhosis, hepatic failure, instable angina, valvular disease, dialysis-induced thrombocytopenia, acute ischemic cerebral apoplexy, acute cerebral thrombosis, cancer metastasis, urinary bladder cancer, mammary cancer, uterine cervical cancer, colon cancer, gastric cancer, ovarian cancer, prostatic cancer, parvicellular pulmonary cancer, non-parvicellular pulmonary cancer, malignant melanoma, Hodgkin's disease, non-Hodgkin lymphoma and the like.

While the dose of the composition of the present invention may vary depending on the kind of the inventive Compound, age, body weight and condition, the dosage form, the mode and the period of the treatment, etc., it may, for example, be generally about 0.01 to about 1000 mg/kg, preferably about 0.01 to about 100 mg/kg, more preferably about 0.1 to about 100 mg/kg, most preferably about 0.1 to about 50 mg/kg, and particularly about 1.5 to about 30 mg/kg, as the inventive Compound (Iaa) or (Ie), per day in a patient having a sepsis (adult weighing about 60 kg), said daily dose being given intravenously all at once or in several portions during a day. It is a matter of course that a lower daily dose may be sufficient or an excessive dose may be required since the dose may vary depending on various factors as discussed above.

The composition of the present invention can be used concurrently with a drug other than compound (I), a salt thereof and a prodrug thereof.

The drugs that can be used concurrently with the composition of the present invention (hereinafter sometimes to be briefly referred to as a combination drug) are, for example, antibacterial agent, antifungal agent, non-steroidal antiinflammatory drug, steroid, anticoagulant, antithrombotic drug aggregation inhibitor, thrombolytic drug, immunomodulator, antiprotozoal, antibiotic, antitussive and expectorant drug, sedative, anesthetic, antiulcer drug, antiarrhythmic, hypotensive diuretic, tranquilizer, antipsychotic, antitumor drug, hypolipidemic drug, muscle relaxant, anticonvulsant, antidepressant, antiallergic drug, cardiac, antiarrhythmic, vasodilator, vasoconstrictor, hypotensive diuretic, antidiabetic drug, antinarcotic, vitamin, vitamin derivative, therapeutic agent for arthritis, antirheumatic, antiasthmatic, therapeutic agent for pollakisuria/anischuria, therapeutic agent for atopic dermatitis, therapeutic agent for allergic rhinitis, hypertensor, endotoxin-antagonist or -antibody, signal transduction inhibitor, inhibitor of inflammatory mediator activity, antibody to inhibit inflammatory mediator activity, inhibitor of anti-inflammatory mediator activity, antibody to inhibit anti-inflammatory mediator activity and the like. Of these, antibacterial agent, antifungal agent, non-steroidal antiinflammatory drug, steroid, anticoagulant and the like are preferable. Specific examples thereof include the following.

(1) Antibacterial Agent

(A) sulfa drug

sulfamethizole, sulfisoxazole, sulfamonomethoxine, sulfamethizole, salazosulfapyridine, silver sulfadiazine and the like.

(B) quinoline antibacterial agent

nalidixic acid, pipemidic acid trihydrate, enoxacin, norfloxacin, ofloxacin, tosufloxacin tosilate, ciprofloxacin hydrochloride, lomefloxacin hydrochloride, sparfloxacin, fleroxacin and the like.

(C) antiphthisic

isoniazid, ethambutol (ethambutol hydrochloride), p-aminosalicylic acid (calcium p-aminosalicylate), pyrazinamide, ethionamide, protionamide, rifampicin, streptomycin sulfate, kanamycin sulfate, cycloserine and the like.

(D) antiacidfast bacterium drug

diaphenylsulfone, rifampicin and the like.

(E) antiviral drug

idoxuridine, aciclovir, vidarabine, ganciclovir and the like.

(F) anti-HIV agent

zidovudine, didanosine, zalcitabine, indinavir sulfate ethanolate, ritonavir and the like.

(G) antispirochetele

(H) antibiotic

tetracycline hydrochloride, ampicillin, piperacillin, gentamicin, dibekacin, kanendomycin, lividomycin, tobramycin, amikacin, fradiomycin, sisomicin, tetracycline, oxytetracycline, rolitetracycline, doxycycline, ampicillin, piperacillin, ticarcillin, cephalothin, cephapirin, cephaloridine, cefaclor, cephalexin, cefroxadine, cefadroxil, cefamandole, cefotoam, cefuroxime, cefotiam, cefotiam hexetil, cefuroxime axetil, cefdinir, cefditoren piboxil, ceftazidime, cefpiramide, cefsulodin, cefmenoxime, cefpodoxime proxetil, cefpirome, cefozopran, cefepime, cefsulodin, cefmenoxime, cetmetazole, cefminox, cefoxitin, cefbuperazone, latamoxef, flomoxef, cefazolin, cefotaxime, cefoperazone, ceftizoxime, moxalactam, thienamycin, sulfazecin, aztreonam or a salt thereof, griseofulvin, lankacidin-group [Journal of Antibiotics (J. Antibiotics), 38, 877–885(1985)] and the like. (2) Antifungal Agent (A) Polyethylene Antibiotic (e.g., Amphotericin B, Nystatin, Trichomycin) (B) griseofulvin, pyrrolnitrin and the like. (C) cytosine metabolism antagonist (e.g., flucytosine) (D) imidazole derivative (e.g., econazole, clotrimazole, miconazole nitrate, bifonazole, croconazole) (E) triazole derivative (e.g. fluconazole, itraconazole, azole compound [2-[(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]-4-[4-(2,2,3,3-tetrafluoropropoxy)phenyl]-3(2H,4H)-1,2,4-triazolone] (F) thiocarbamic acid derivative (e.g. trinaphthol) (G) echinocandin derivative (e.g., caspofungin, micafungin, anidulafungin) and the like. (3) Non-steroidal Antiinflammatory Drug acetaminophen, phenacetin, ethenzamide, sulpyrine, antipyrine, migrenin, aspirin, mefenamic acid, flufenamic acid, diclofenac sodium, loxoprofen sodium, phenylbutazone, indomethacin, ibuprofen, ketoprofen, naproxen, oxaprozin, flurbiprofen, fenbufen, pranoprofen, floctafenine, epirizole, tiaramide hydrochloride, zaltoprofen, gabexate mesilate, camostat mesilate, urinastatin, colchicine, probenecid, sulfinpyrazone, benzbromarone, allopurinol, gold sodium thiomalate, sodium hyaluronate, sodium salicylate, morphine hydrochloride, salicylic acid, atropine, scopolamine, morphine, pethidine, levorphanol, ketoprofen, naproxen, oxymorphone or a salt thereof, and the like. (4) Steroid dexamethasone, hexestrol, methimazole, betamethasone, triamcinolone, triamcinolone acetonide, fluocinonide, fluocinolone acetonide, prednisolone, methylprednisolone, cortisone acetate, hydrocortisone, fluorometholone, beclometasone propionate, estriol and the like. (5) Anticoagulant heparin sodium, sodium citrate, activated protein C, tissue factor pathway inhibitor, antithrombin III, dalteparin sodium, warfarin potassium, argatroban, gabexate, sodium citrate and the like. (6) Antithrombotic Drug ozagrel sodium, ethyl icosapentate, beraprost sodium, alprostadil, ticlopidine hydrochloride, pentoxifylline, dipyridamole and the like. (7) Thrombolytic Drug tisokinase, urokinase, streptokinase and the like. (8) Immunomodulator cyclosporin, tacrolimus, gusperimus, azathioprine, antilymphocyte serum, dried sulfonated immunoglobulin, erythropoietin, colony-stimulating factor, interleukin, interferon and the like. (9) Antiprotozoal metronidazole, tinidazole, diethylcarbamazine citrate, quinine hydrochloride, quinine sulfate and the like. (10) Antitussive and Expectorant Drug ephedrine hydrochloride, noscapine hydrochloride, codeine phosphate, dihydrocodeine phosphate, isoproterenol hydrochloride, ephedrine hydrochloride, methylephedrine hydrochloride, noscapine hydrochloride, alloclamide, chlophedianol, picoperidamine, chloperastine, protokylol, isoproterenol, salbutamol, terbutaline, oximetebanol, morphine hydrochloride, dextromethorphan hydrobromide, oxycodone hydrochloride, dimemorphan phosphate, tipepidine hibenzate, pentoxyverine citrate, clofedanol hydrochloride, benzonatate, guaifenesin, bromhexine hydrochloride, ambroxol hydrochloride, acetylcysteine, ethyl cysteine hydrochloride, carbocysteine and the like. (11) Sedative chlorpromazine hydrochloride, atropine sulfate, phenobarbital, barbital, amobarbital, pentobarbital, thiopental sodium, thiamylal sodium, nitrazepam, estazolam, flurazepam, haloxazolam, triazolam, flunitrazepam, bromovalerylurea, chloral hydrate, triclofos sodium and the like. (12) Anesthetic (12-1) Local Anesthetic cocaine hydrochloride, procaine hydrochloride, lidocaine, dibucaine hydrochloride, tetracaine hydrochloride, mepivacaine hydrochloride, bupivacaine hydrochloride, oxybuprocaine hydrochloride, ethyl aminobenzoate, oxethazaine) and the like. (12-2) General Anesthetic (A) inhalation anesthetic (e.g., ether, halothane, nitrous oxide, isoflurane, enflurane), (B) intravenous anesthetic (e.g., ketamine hydrochloride, droperidol, thiopental sodium, thiamylal sodium, pentobarbital) and the like. (13) Antiulcer Drug metoclopromide, histidine hydrochloride, lansoprazole, metoclopramide, pirenzepine, cimetidine, ranitidine, famotidine, urogastrone, oxethazaine, proglumide, omeprazole, sucralfate, sulpiride, cetraxate, gefarnate, aldioxa, teprenone, prostaglandin and the like. (14) Antiarrhythmic (A) Na channel blocker (e.g., quinidine, procainamide, disopyramide, ajmaline, lidocaine, mexiletine, phenitoin), (B) β-blocker (e.g., propranolol, alprenolol, bufetolol, oxprenolol, atenolol, acebutolol, metoprolol, bisoprolol, pindolol, carteolol, arotinolol, (C) K channel blocker (e.g., amiodarone), (D) Ca channel blocker (e.g., verapamil, diltiazem) and the like. (15) Hypotensive Diuretic hexamethonium bromide, clonidine hydrochloride, hydrochlorothiazide, trichlormethiazide, furosemide, ethacrynic acid, bumetanide, mefruside, azosemide, spironolactone, potassium canrenoate, triamterene, amiloride, acetazolamide, D-mannitol, isosorbide, aminophyllin and the like. (16) Tranquilizer diazepam, lorazepam, oxazepam, chlordiazepoxide, medazepam, oxazolam, cloxazolam, clotiazepam, bromazepam, etizolam, fludiazepam, hydroxyzine and the like. (17) Antipsychotic chlorpromazine hydrochloride, prochlorperazine, trifluoperazine, thioridazine hydrochloride, perphenazine maleate, fluphenazine enanthate, prochlorperazine maleate, levomepromazine maleate, promethazine hydrochloride, haloperidol, bromperidol, spiperone, reserpine, clocapramine hydrochloride, sulpiride, zotepine and the like. (18) Antitumor Drug 6-O-(N-chloroacetylcarbamoyl)fumagillol, bleomycin, methotrexate, actinomycin D, mitomycin C, daunorubicin, adriamycin, neocarzinostatin, cytosine arabinoside, fluorouracil, tetrahydrofuryl-5-fluorouracil, picibanil, lentinan, levamisole, bestatin, azimexon, glycyrrhizin, doxorubicin hydrochloride, aclarubicin hydrochloride, bleomycin hydrochloride, peplomycin sulfate, vincristine sulfate, vinblastine sulfate, irinotecan hydrochloride, cyclophosphamide, melphalan, busulphan, thiotepa, procarbazine hydrochloride, cisplatin, azathioprine, mercaptopurine, tegafur, carmofur, cytarabine, methyltestosterone, testosterone propionate, testosterone enanthate, mepitiostane, fosfestol, chlormadinone acetate, leuprorelin acetate, buserelin acetate and the like. (19) Hypolipidemic Drug clofibrate, ethyl 2-chloro-3-[4-(2-methyl-2-phenylpropoxy)phenyl]propionate [Chemical and pharmaceutical Bulletin (Chem. Pharm. Bull), 38, 2792–2796 (1990)], pravastatin, simvastatin, probucol, bezafibrate, clinofibrate, nicomol, cholestyramine, dextran sulfate sodium and the like. (20) Muscle Relaxant pridinol, tubocurarine, pancuronium, tolperisone hydrochloride, chlorphenesin carbamate, baclofen, chlormezanone, mephenesin, chlorzoxazone, eperisone, tizanidine and the like. (21) Anticonvulsant phenytoin, ethosuximide, acetazolamide, chlordiazepoxide, trimethadione, carbamazepine, phenobarbital, primidone, sulthiame, sodium valproate, clonazepam, diazepam, nitrazepam and the like. (22) Antidepressant imipramine, clomipramine, noxiptiline, phenelzine, amitriptyline hydrochloride, nortriptyline hydrochloride, amoxapine, mianserin hydrochloride, maprotiline hydrochloride, sulpiride, fluvoxamine maleate, trazodone hydrochloride and the like. (23) Antiallergic Drug diphenhydramine, chlorpheniramine, tripelennamine, metodilamine, clemizole, diphenylpyraline, methoxyphenamine, sodium cromoglycate, tranilast, repirinast, amlexanox, ibudilast, ketotifen, terfenadine, mequitazine, azelastine, epinastine, ozagrel hydrochloride, pranlkast hydrate, seratrodast and the like. (24) Cardiac trans-pi-oxocamphor, terephyllol, aminophyllin, etilefrine, dopamine, dobutamine, denopamine, aminophyllin, bencirin, amrinone, pimobendan, ubidecarenone, digitoxin, digoxin, methyldigoxin, lanatoside C, G-strophanthin and the like. (25) Vasodilator oxyfedrine, diltiazem, tolazoline, hexobendine, bamethan, clonidine, methyldopa, guanabenz and the like. (26) Vasoconstrictor dopamine, dobutamine denopamine and the like. (27) Hypotensive Diuretic hexamethonium bromide, pentolinium, mecamylamine, ecarazine, lonidine, diltiazem, nifedipine and the like. (28) Antidiabetic Drug tolbutamide, chlorpropamide, acetohexamide, glibenclamide, tolazamide, acarbose, epalrestat, troglitazone, glucagon, glymidine, glipzide, phenformin, buformin, metformin and the like. (29) Antinarcotic levallorphan, nalorphine, naloxone or a salt thereof and the like. (30) Fat-soluble Vitamin (A) vitamin A:vitamin A₁, vitamin A₂ and retinol palmitate (B) vitamin D:vitamin D₁, D₂, D₃, D₄ and D₅ (C) vitamin E:α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol, dl-α-tocopherol nicotinate (D) vitamin K:vitamin K₁, K₂, K₃ and K₄ (E) folic acid (vitamin M) and the like. (31) Vitamin Derivative various derivatives of vitamins, for example, vitamin D₃ derivatives such as 5,6-trans-cholecalciferol, 2,5-hydroxycholecalciferol, 1-α-hydroxycholecalciferol and the like, vitamin D₂ derivatives such as 5,6-trans-ergocalciferol and the like. (32) Antiasthmatic isoprenaline hydrochloride, salbutamol sulfate, procaterol hydrochloride, terbutaline sulfate, trimetoquinol hydrochloride, tulobuterol hydrochloride, orciprenaline sulfate, fenoterol hydrobromide, ephedrine hydrochloride, iprotropium bromide, oxitropium bromide, flutropium bromide, theophyline, aminophyllin, sodium cromoglycate, tranilast, repirinast, anrexanone, ibudilast, ketotifen, terfenadine, mequitazine, azelastine, epinastine, ozagrel hydrochloride, pranlkast hydrate, seratrodast, dexamethasone, prednisolone, hydrocortisone, beclometasone dipropionate and the like. (33) Therapeutic Agent for Pollakisuria/Anischuria flavoxate hydrochloride and the like. (34) Therapeutic Agent for Atopic Dermatitis sodium cromoglycate and the like. (35) Therapeutic Agent for Allergic Rhinitis sodium cromoglycate, chlorpheniramine maleate, alimemazine tartrate, clemastine fumarate, homochlorcyclizine hydrochloride, terfenadine, mequitazine and the like. (36) Hypertensive Drug dopamine, dobutamine, denopamine, digitoxin, digoxin, methyldigoxin, lanatoside C, G-strophanthin and the like. (37) Others hydroycam, diaserine, megestrol acetate, nicerogolin, prostaglandins and the like.

A combined use of the composition of the present invention and a combination drug provides the following effects.

(1) The dose of the compound (I), a salt thereof and a prodrug thereof can be reduced than in the case of a sole administration of the composition of the present invention.

(2) A synergistic therapeutic effect can be achieved against the above-mentioned sepsis, septic shock, inflammatory diseases, infectious diseases and the like.

(3) A broad range of therapeutic effects can be achieved against various diseases developed in association with viral infection and the like.

With regard to the use of the composition of the present invention and a combination drug, the composition of the present invention and the combination drug are free of any limitation on the timing of the administration or the composition of the present invention and the combination drug may be simultaneously administered to the administration object, or may be administered with time difference. The dose of the combination drug follows a clinical dose and can be appropriately determined depending on the administration object, administration route, disease, combination and the like.

The mode of administration of the composition of the present invention and the combination drug is not particularly limited, as long as the composition of the present invention and the combination drug are combined for administration. While the mode of such administration varies depending on the kind of the combination drug and the like, (1) administration of a single preparation obtained by simultaneous addition of the composition of the present invention and the combination drug, (2) simultaneous administration of two kinds of preparations obtained by separate preparation of the composition of the present invention and a pharmaceutical composition of the combination drug, by a single administration route, (3) time stagger administration of two kinds of preparations obtained by separate preparation of the composition of the present invention and a pharmaceutical composition of the combination drug, by the same administration route, (4) simultaneous administration of two kinds of preparations obtained by separate preparation of the composition of the present invention and a pharmaceutical composition of the combination drug, by different administration routes, (5) time stagger administration of two kinds of preparations obtained by separate preparation of the composition of the present invention and a pharmaceutical composition of the combination drug, by different administration routes, such as administration in the order of the composition of the present invention and then the pharmaceutical composition of the combination drug, or in a reversed order, and the like are exemplified.

A pharmaceutical composition of the combination drug has low toxicity and can be administered safely by admixing the combination drug with, for example, a pharmacologically acceptable carrier according to a method known per se to give a pharmaceutical composition, such as tablets (inclusive of sugar-coated tablets and film-coated tablets), powders, granules, capsules, (inclusive of soft capsules), liquids, injections, suppositories, sustained release agents and the like, for oral or parenteral (e.g., topical, rectal or intravenous administration) administration. An injection can be administered intravenously, intramuscularly, subcutaneously, into the organs or directly into the lesion.

As the pharmacologically acceptable carrier usable for the production of the pharmaceutical composition of a combination drug, there are mentioned various conventional organic or inorganic carriers as a material for the preparation. Examples thereof include excipients, lubricants, binders and disintegrators for solid preparations, and solvents, solubilizers, suspending agents, isotonic agents, buffers, soothing agents, and the like for liquid preparations. Where necessary, conventional additives such as antiseptics, antioxidants, coloring agents, sweeteners, absorbents, moistening agents and the like can be used appropriately in suitable amounts.

As the excipient, there are mentioned, for example, lactose, sucrose, D-mannitol, starch, corn starch, crystalline cellulose, light anhydrous silicic acid and the like.

As the lubricant, there are mentioned, for example, magnesium stearate, calcium stearate, talc, colloidal silica and the like.

As the binder, there are mentioned, for example, crystalline cellulose, sacrose, D-mannitol, dextrin, hydroxypropylcellulose, hydroxypropylmethylcellulose, polyvinylpyrrolidone, starch, sucrose, gelatin, methylcellulose, carboxymethylcellulose sodium and the like.

As the disintegrator, there are mentioned, for example, starch, carboxymethylcellulose, carboxymethylcellulose calcium, sodium carboxymethyl starch, L-hydroxypropylcellulose and the like.

As the solvent, there are mentioned, for example, injectable water, alcohol, propylene glycol, Macrogol, sesame oil, corn oil, olive oil and the like.

As the solubilizer, there are mentioned, for example, polyethylene glycol, propylene glycol, D-mannitol, benzyl benzoate, ethanol, tris-aminomethane, cholesterol, triethanolamine, sodium carbonate, sodium citrate and the like.

As the suspending agent, there are mentioned, for example, surfactants such as stearyl triethanolamine, sodium lauryl sulfate, lauryl aminopropionate, lecithin, benzalkonium chloride, benzethonium chloride, glyceryl monostearate and the like; hydrophilic polymers such as polyvinyl alcohol, polyvinylpyrrolidone, carboxymethylcellulose sodium, methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose and the like, and the like.

As the isotonic agent, there are mentioned, for example, glucose, D-sorbitol, sodium chloride, glycerine, D-mannitol and the like.

As the buffer, there are mentioned, for example, buffers such as phosphate, acetate, carbonate, citrate etc., and the like.

As the soothing agent, there are mentioned, for example, benzyl alcohol and the like.

As the antiseptic, there are mentioned, for example, p-oxybenzoates, chlorobutanol, benzyl alcohol, phenethyl alcohol, dehydroacetic acid, sorbic acid and the like.

As the antioxidant, there are mentioned, for example, sulfite, ascorbic acid, α-tocopherol and the like.

When a combination drug is added to the composition of the present invention, the amount of the combination drug can be appropriately determined depending on the administration object, administration route, disease and the like, and can be adjusted as are the aforementioned compound (I), a salt thereof and a prodrug thereof.

When the composition of the present invention and a pharmaceutical composition of the combination drug are used in combination, the content of the combination drug in the pharmaceutical composition of the combination drug can be appropriately determined depending on the administration object, administration route, disease and the like. It is generally about 0.01–100 wt %, preferably about 0.1–50 wt %, more preferably about 0.5–20 wt %, based on the preparation in total.

The content of the additive, such as a carrier, in the pharmaceutical composition of the combination drug varies depending on the form of the preparation. It is generally about 1–99.99 wt %, preferably about 10–90 wt %, based on the preparation in total.

The pharmaceutical composition of the combination drug can be produced by a method known per se, which is generally employed for the preparation of a pharmaceutical composition.

For example, a combination drug can be prepared into an aqueous injection together with a dispersant (e.g., Tween 80 (manufactured by ATLASPOWDER USA), HCO 60 (manufactured by NIKKO CHEMICALS), polyethylene glycol, carboxymethylcellulose, sodium arginate, hydroxypropylmethylcellulose, dextrin and the like), a stabilizing agent (e.g., ascorbic acid, sodium pyrosulfite and the like), a surfactant (e.g., polysorbate 80, Macrogol and the like), a solubilizer (e.g., glycerine, ethanol and the like), a buffering agent (e.g., phosphoric acid, alkali metal salt thereof, citric acid, alkali metal salt thereof and the like), an isotonic agent (e.g., sodium chloride, potassium chloride, mannitol, sorbitol, glucose and the like), a pH adjusting agent (e.g., hydrochloric acid, sodium hydroxide and the like), a preservative (e.g., ethyl p-oxybenzoate, benzoic acid, methyl paraben, propyl paraben, benzyl alcohol and the like), a solubilizer (e.g., conc. glycerine, meglumine and the like), a solubilizer (e.g., propylene glycol, sucrose and the like), a soothing agent (e.g., glucose, benzyl alcohol and the like) and the like, or into an oil-based injection by dissolving, suspending or emulsifying in a vegetable oil such as olive oil, sesame oil, cottonseed oil, corn oil and the like or a solubilizer such as propylene glycol and the like.

In addition, a combination drug may be used instead of the compound (I), a salt thereof or a prodrug thereof to give an emulsion composition for injection of the present invention.

An oral formulation can be produced by a method known per se by, for example, compressing a combination drug together with an excipient (e.g., lactose, sucrose, starch and the like), a disintegrant (e.g., starch, calcium carbonate and the like), a binder (e.g., starch, gum arabic, carboxymethyl cellulose, polyvinyl pyrrolidone, hydroxypropyl cellulose and the like) or a lubricant (e.g., talc, magnesium stearate, polyethylene glycol 6000 and the like), followed by, where necessary, a coating process known per se for the purpose of masking a taste, forming an enteric coat, or achieving a sustained release. Such coating may, for example, be used hydroxypropylmethyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, polyoxyethylene glycol, Tween 80, Pluronic F68, cellulose acetate phthalate, hydroxypropylmethyl cellulose phthalate, hydroxymethyl cellulose acetate succinate, Eudragid (manufactured by ROHME, Germany, a copolymer of methacrylic acid and acrylic acid), a dye (e.g., colcothar, titanium dioxide and the like) and the like. The preparation for oral administration may be either a rapid release preparation or a sustained release preparation.

For example, when a suppository is produced, a combination drug may be formulated also as an oil-based or aqueous solid or semi-solid or liquid suppository by a method known per se. An oil-based suppository base may be, for example, a high fatty glyceride (e.g., cocoa butter, WITEPSOL (manufactured by DYNAMIT NOBEL, Germany) and the like), a middle fatty acid (e.g., MYGLYOL (manufactured by DYNAMIT NOBEL, Germany) and the like), a vegetable oil (e.g., sesame oil, soybean oil, cottonseed oil and the like) and the like as appropriate. An aqueous base may be, for example, polyethylene glycol or propylene glycol, and an aqueous gel base may be, for example, a natural gum, a cellulose derivative, a vinyl polymer, an acrylic polymer and the like.

Examples of the above-mentioned sustained release preparation include sustained release microcapsule and the like.

A sustained release microcapsule can be prepared by a method known per se. For example, a sustained release preparation shown in the following [2] is preferably formed and administered.

A combination drug can be formed into a preparation for oral administration such as a solid preparation (e.g., powder, granule, tablet, capsule) and the like, or a preparation for rectal administration such as a suppository and the like, depending on the kind of the drug.

In the following, [1] an injection of the combination drug and preparation thereof, [2] a sustained release preparation or a rapid release preparation of a combination drug and preparation thereof, and [3] a sublingual tablet, buccal or oral cavity rapid disintegrator of a combination drug and preparation thereof are concretely explained.

[1] Injection and Preparation Thereof

An injection containing a combination drug dissolved in water is preferable. The injection may contain benzoate and/or salicylate.

The injection is obtained by dissolving both a combination drug and, where desired, benzoate and/or salicylate in water.

The salt of the above-mentioned benzoic acid and salicylic acid includes, for example, alkali metal salts such as sodium, potassium and the like, alkaline earth metal salts such as calcium, magnesium and the like, ammonium salt, meglumine salt, and organic acid salt such as trometamol and the like, and the like.

The concentration of the combination drug in the injection is about 0.5–50 w/v %, preferably about 3–20 w/v %.

The concentration of the benzoate and/or salicylate is preferably 0.5–50 w/v %, more preferably 3–20 w/v %.

The injection may contain additives generally used for injections, such as a stabilizing agent (ascorbic acid, sodium pyrosulfite and the like), a surfactant (polysorbate 80, Macrogol and the like), a solubilizing agent (glycerine, ethanol and the like), a buffer (phosphoric acid, alkali metal salt thereof, citric acid, alkali metal salt thereof and the like), an isotonic agent (sodium chloride, potassium chloride and the like), a dispersing agent (hydroxypropylmethylcellulose, dextrin), a pH adjusting agent (hydrochloric acid, sodium hydroxide and the like), a preservative (ethyl p-oxybenzoate, benzoic acid and the like), a solubilizer (e.g., conc. glycerine, meglumine and the like), a solubilizer (propylene glycol, sucrose and the like), a soothing agent (e.g., glucose, benzyl alcohol and the like) and the like as appropriate. Generally, these additives are added in a proportion generally employed for injections.

The injection is preferably adjusted to pH 2–12, preferably 2.5–8.0, by the use of a pH adjusting agent.

The injection can be obtained by dissolving both the combination drug and, where desired, benzoate and/or salicylate, and where necessary, the above-mentioned additives in water. These may be dissolved in any order in a suitable manner as in conventional production of injections.

The injectable aqueous solution is preferably heated and, in the same manner as with conventional injections, subjected to, for example, sterilization by filtration, high pressure sterilization by heating and the like to provide an injection.

The injectable aqueous solution is preferably subjected to high pressure sterilization by heating at, for example, 100° C.–121° C. for 5 min–30 min.

It may be prepared into an antibacterial solution, so that it can be used as a preparation for plural subdivided administrations.

[2] Sustained Release Preparation or Rapid Release Preparation and Preparation Thereof

A sustained release preparation wherein a core containing a combination drug is covered on demand with a film forming agent, such as a water-insoluble material, a swellable polymer and the like, is preferable. For example, a sustained release preparation for oral administration once a day is preferable.

The water-insoluble material to be used for the film forming agent is, for example, cellulose ethers such as ethylcellulose, butylcellulose and the like; cellulose esters such as cellulose acetate, cellulose propionate and the like; polyvinyl esters such as poly(vinyl acetate), poly(vinyl butyrate) and the like; acrylic polymers such as acrylic acid/methacrylic acid copolymer, methyl methacrylate copolymer, ethoxyethyl methacrylate/cinnamoethyl methacrylate/aminoalkyl methacrylate copolymer, polyacrylic acid, polymethacrylic acid, methacrylic acid alkylamide copolymer, poly(methyl methacrylate), polymethacrylate, polymethacrylic amide, aminoalkyl methacrylate copolymer, poly(methacrylic anhydride) and glycidyl methacrylate copolymer, particularly Eudragits (Rohm Pharma) such as Eudragit RS-100, RL-100, RS-30D, RL-30D, RL-PO, RS-PO (ethyl acrylate.methyl methacrylate.trimethyl chloride methacrylate.ammonium ethyl copolymer), Eudragit NE-30D (methyl methacrylate.ethyl acrylate copolymer) and the like, and the like; hydrogenated oils such as hydrogenated castor oil (e.g., Lovely Wax (Freund Inc.) and the like) and the like; waxes such as carnauba wax, fatty acid glycerine ester, paraffin and the like; polyglycerine fatty acid ester and the like.

As the swellable polymer, a polymer having an acidic dissociable group, which shows pH-dependent swelling, is preferable, and a polymer having an acidic dissociable group, which shows less swelling in an acidic range, such as in the stomach, but otherwise in a neutral range, such as in the small intestine and large intestine, is preferable.

Examples of the polymer having an acidic dissociable group, which shows pH-dependent swelling, include crosslinking type polyacrylic acid polymers such as Carbomer 934P, 940, 941, 974P, 980, 1342 and the like, polycarbophil, calcium polycarbophil (all mentioned above are manufactured by BF Goodrich), HI-BIS-WAKO 103, 104, 105, 304 (all manufactured by Waco Pure Chemicals Industries, Ltd.) and the like.

The film forming agent to be used for the sustained release preparation may further contain a hydrophilic material.

Examples of the hydrophilic material include polysaccharides optionally having a sulfuric acid group such as pullulan, dextrin, alkali metal salt of alginic acid and the like; polysaccharides having a hydroxy alkyl group or a carboxy alkyl group such as hydroxypropylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose sodium and the like; ethylcellulose, polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol and the like.

The content of the water-insoluble material of the film forming agent for a sustained release preparation is about 30–about 90% (w/w), preferably about 35–about 80% (w/w), more referably about 40–75% (w/w), and the content of the wellable polymer is about 3–about 30% (w/w), preferably about 3–about 15% (w/w). The film forming agent may further contain a hydrophilic material, in which case the content of the hydrophilic material for film forming agent is not more than about 50% (w/w), preferably about 5–about 40% (w/w), more preferably about 5–about 35% (w/w). As used herein, the above-mentioned % (w/w) is a weight percentage relative to the film forming agent composition wherein the solvent (e.g., water, lower alcohol such as methanol, ethanol and the like) has been removed from the film forming liquid agent.

A sustained release preparation is produced by preparing a core containing a drug as exemplarily mentioned below, and coating the resulting core with a film forming liquid agent prepared by dissolving by heating or dissolving or dispersing in a solvent a water-insoluble material, a swellable polymer and the like.

I. Preparation of Core Containing a Drug

The form of the core containing a drug (hereinafter sometimes simply referred to as a core) to be coated with a film forming agent is not particularly limited, but it is preferably formed into particles such as granules, subtilized granules and the like.

When the core is made of granules or subtilized granules, the average particle size thereof is preferably about 150–2,000 μm, more preferably about 500–about 1,400 μm.

The core can be prepared by a typical production method. For example, a drug is mixed with suitable excipients, binders, disintegrators, lubricants, stabilizers and the like, and subjected to wet extrusion granulation, fluidized bed granulation and the like.

The drug content of the core is about 0.5–about 95% (w/w), preferably about 5.0–about 80% (w/w), more preferably about 30–about 70% (w/w).

Examples of the excipient to be contained in the core include saccharides such as sucrose, lactose, mannitol, glucose and the like, starch, crystalline cellulose, calcium phosphate, corn starch and the like of these, crystalline cellulose and corn starch are preferable.

Examples of the binder include polyvinyl alcohol, hydroxypropylcellulose, polyethylene glycol, polyvinylpyrrolidone, Pluronic F68, gum arabic, gelatin, starch and the like. Examples of the disintegrator include carboxymethylcellulose calcium (ECG505), croscarmellose sodium (Ac-Di-Sol), crosslinked polyvinylpyrrolidone (Crospovidone), low substituted hydroxypropylcellulose (L-HPC) and the like. Of these, hydroxypropylcellulose, polyvinylpyrrolidone and low substituted hydroxypropylcellulose are preferable. Examples of the lubricant and coagulation preventive include talc, magnesium stearate and inorganic salts thereof, and examples of the lubricant include polyethylene glycol and the like. Examples of the stabilizer include acids such as tartaric acid, citric acid, succinic acid, fumaric acid, maleic acid and the like.

The core can be also prepared by, besides the above-mentioned production methods, for example, rolling granulation wherein a mixture of a drug, an excipient, a lubricant and the like or a drug is added by small portions while spraying a binder dissolved in a suitable solvent such as water, lower alcohol (e.g., methanol, ethanol and the like) and the like on an inert carrier particles to be the center of the core, a pan coating method, a fluidized bed coating method or a melt granulating method. Examples of the inert carrier particle include those prepared from sucrose, lactose, starch, crystalline cellulose and waxes, which preferably has an average particle size of about 100 μm–about 1,500 μm.

To separate the drug contained in the core from the film forming agent, the surface of the core may be coated with a protective agent. Examples of the protective agent include the aforementioned hydrophilic material, water-insoluble material and the like. As the protective agent, preferably polyethylene glycol, polysaccharides having a hydroxyalkyl group or a carboxyalkyl group, more preferably hydroxypropylmethylcellulose and hydroxypropylcellulose are used. The protective agent may contain, as a stabilizer, an acid such as tartaric acid, citric acid, succinic acid, fumaric acid, maleic acid and the like, and a lubricant such as talc and the like. When the protective agent is used, the coating amount of the film forming agent is about 1–about 15% (w/w), preferably about 1–about 10% (w/w), more preferably about 2–about 8% (w/w), relative to the core.

The protective agent can be coated by a typical coating method. Specifically, the protective agent is, for example, spray-coated to the core by a fluidized bed coating method, a pan coating method, and the like.

II. Coating of Core with a Film Forming Agent

The core obtained in the aforementioned I is coated with a film forming liquid agent prepared by dissolving by heating or dissolving or dispersing in a solvent the aforementioned water-insoluble material, a pH-dependent swellable polymer, and a hydrophilic material to provide a sustained release preparation.

For coating a film forming liquid agent to a core, for example, a spray coating method and the like can be employed.

The composition ratio of the water-insoluble material, swellable polymer or hydrophilic material in the film forming liquid agent is suitable determined such that the content of each component of the coating film becomes the aforementioned content.

The coating amount of the film forming agent is about 1–about 90% (w/w), preferably about 5–about 50% (w/w), more preferably about 5–35% (w/w), relative to the core (exclusive of the coating amount of protective agent).

As the solvent for the film forming liquid agent, water and organic solvents can be used alone or in a mixture of the both. The mixing ratio (water/organic solvent: weight ratio) of water and the organic a solvent in the mixture can vary within the range of 1–100%, which is preferably 1–about 30%. The organic solvent is not subject to any particular limitation as long as it dissolves the water-insoluble material. For example, lower alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol, n-butyl alcohol and the like, lower alkanone such as acetone and the like, acetonitrile, chloroform, methylene chloride and the like are used. Of these, lower alcohol is preferable, and ethyl alcohol and isopropyl alcohol as are particularly preferable. Water and a mixture of water and an organic solvent are preferably used as a solvent of the film forming agent. Where necessary, the film forming liquid agent may contain an acid such as tartaric acid, citric acid, succinic acid, fumaric acid, maleic acid and the like for the stabilization of the film forming liquid agent.

When spray coating is employed, the method follows a conventional coating method, which is specifically a spray coating of a film forming liquid agent to the core by, for example, a fluidized bed coating method, a pan coating method and the like. Where necessary, talc, titanium oxide, magnesium stearate, calcium stearate, light anhydrous silicic acid and the like may be added as a lubricant, and glycerine fatty acid ester, hydrogenated castor oil, triethyl citrate, cetyl alcohol, stearyl alcohol and the like may be added as a plasticizer.

After coating of a film forming agent, an antistatic agent such as talc and the like may be added as necessary.

A rapid release preparation may be a liquid (solution, suspension, emulsion and the like) or a solid (particles, pill, tablet and the like). While an oral administration agent, and a parenteral administration agent such as injection and the like are used, preferred is an agent for oral administration.

A rapid release preparation may generally contain, in addition to the drug, which is an active ingredient, carriers, additives and excipients (hereinafter sometimes simply referred to as an excipient), which are conventionally used in the field of preparation. The excipient for a preparation is not subject to any particular limitation as long as it is conventionally employed as an excipient for a preparation. For example, the excipient for the oral solid preparation includes lactose, starch, corn starch, crystalline cellulose (manufactured by Asahi Kasei Corporation, Avicel PH101 and the like), powder sugar, granulated sugar, mannitol, light anhydrous silicic acid, magnesium carbonate, calcium carbonate, L-cysteine and the like, preferably corn starch and mannitol and the like. These excipients may be used alone or in combination. The content of the excipient is, for example, about 4.5–about 99.4 w/w %, preferably about 20–about 98.5 w/w %, more preferably about 30–about 97 w/w %, relative to the total amount of the rapid release preparation.

The drug content of the rapid release preparation is appropriately determined from the range of about 0.5–about 95%, preferably about 1–about 60%, relative to the total amount of the rapid release preparation.

When the rapid release preparation is an oral solid preparation, it generally contains a disintegrator in addition to the above-mentioned components. Examples of the disintegrator include calcium carboxymethylcellulose (ECG-505 manufactured by GOTOKU CHEMICAL COMPANY LTD.), croscarmellose sodium (e.g., Actisol manufactured by Asahi Kasei Corporation), Crospovidone (e.g., KollidonCL manufactured by BASF), low substituted hydroxypropylcellulose (Shin-Etsu Chemical Co., Ltd.), carboxymethyl starch (Matsutani Chemical Industry Co., Ltd., sodium carboxymethyl starch (Exprotab manufactured by Kimura Sangyo), partially a starch (PCS manufactured by Asahi Kasei Corporation) and the like. For example, one capable of disintegrating granules by water absorption, swelling, forming a channel between the active ingredient constituting the core and an excipient-upon contact with water and the like can be used. These disintegrators can be used alone or in combination. The amount of the disintegrator is appropriately determined depending on the kind of the combination drug to be used and amount thereof, design of the release preparation and the like. It is, for example, about 0.05–about 30 w/w %, preferably about 0.5–about 15 w/w %, relative to the total amount of the rapid release preparation.

When the rapid release preparation is an oral solid preparation, the oral solid preparation may further contain, in addition to the above-mentioned composition, routine additives used for solid preparation on demand. Examples of the additive include a binder (e.g., sucrose, gelatin, gum arabic powder, methylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, polyvinylpyrrolidone, Pullulan, dextrin and the like), a lubricant (e.g., polyethylene glycol, magnesium stearate, talc, light anhydrous silicic acid (e.g., Aerosil (Nippon Aerosil)), a surfactant (e.g., anionic surfactant such as sodium alkylsulfate and the like, non-ionic surfactant such as polyoxyethylene fatty acid ester and polyoxyethylenesorbitan fatty acid ester, polyoxyethylene castor oil derivative and the like, and the like), a coloring agent (e.g., synthetic color, caramel, iron oxide red, titanium oxide, riboflavins), where necessary, a corrigent (e.g., a sweetener, flavor and the like), an absorbent, an antiseptic, a moistening agent, an antistatic agent and the like. As the stabilizer, an organic acid such as tartaric acid, citric acid, succinic acid, fumaric acid and the like may be added.

The above-mentioned binder preferably is used hydroxypropylcellulose, polyethylene glycol, polyvinylpyrrolidone and the like.

The rapid release preparation can be prepared based on the conventional preparation method, by mixing each of the aforementioned components, and where necessary, further kneading and forming. The above-mentioned mixing can be performed by a conventional method, such as mixing, kneading and the like. Specifically, for example, when a rapid release preparation is formed into particles, a vertical granulator, a universal kneader (manufactured by Hata Tekkosho), a fluidized bed granulator FD-5S (manufactured by Powrex Corporation) and the like are used for mixing, which is followed by granulating by wet extrusion granulation, fluidized bed-granulation and the like, to give the preparation, as in the preparation of the core of the aforementioned sustained release preparation.

The rapid release preparation and the sustained release preparation thus obtained may be used as they are. Alternatively, after suitable separate preparation together with an excipient for a preparation and the like according to a conventional method, they may be administered simultaneously or at optional administration intervals. Alternatively, they may be prepared into a single preparation for oral administration (e.g., granule, subtilized granule, tablet, capsule and the like) as they are or together with excipient for preparation and the like as appropriate. The both preparations are converted to granules or subtilized granules and filled in a single capsule and the like to give a preparation for oral administration.

[3] A Sublingual Tablet, Buccal or Oral Cavity Rapid Disintegrator and Preparation Thereof

The sublingual tablet, buccal preparation and oral cavity rapid disintegrator may be a solid preparation such as tablet and the like or an oral cavity mucous membrane adhesion tablet (film).

As the sublingual tablet, buccal or oral cavity rapid disintegrator, a preparation containing a combination drug and an excipient is preferable. It may contain auxiliaries such as a lubricant, an isotonic agent, a hydrophilic carrier, a water dispersible polymer, a stabilizer and the like. For easy absorption and enhanced bioavailability, β-cyclodextrin or β-cyclodextrin derivative (e.g., hydroxypropyl-β-cyclodextrin and the like) and the like may be contained.

The above-mentioned excipient include lactose, sucrose, D-mannitol, starch, crystalline cellulose, light anhydrous silicic acid and the like. The lubricant include magnesium stearate, calcium stearate, talc, colloidal silica and the like, particularly magnesium stearate and colloidal silica are preferable. The isotonic agent include sodium chloride, glucose, fructose, mannitol, sorbitol, lactose, saccharose, glycerine, urea and the like, particularly mannitol is preferable. The hydrophilic carrier include swellable hydrophilic carriers such as crystalline cellulose, ethylcellulose, crosslinked polyvinylpyrrolidone, light anhydrous silicic acid, silicic acid, dicalcium phosphate, calcium carbonate and the like, particularly crystalline cellulose (e.g., microcrystalline cellulose and the like) is preferable. Examples of the water dispersible polymer include gum (e.g., gum tragacanth, acacia gum, guar gum), alginate (e.g., sodium alginate), cellulose derivative (e.g., methylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose), gelatin, soluble starch, polyacrylic acid (e.g., carbomer), polymethacrylic acid, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, polycarbofil, ascorbic palmitate and the like, with preference given to hydroxypropylmethylcellulose, polyacrylic acid, alginate, gelatin, carboxymethylcellulose, polyvinylpyrrolidone, polyethylene glycol and the like. Particularly, hydroxypropylmethylcellulose is preferable. Examples of the stabilizer include cysteine, thiosorbitol, tartaric acid, citric acid, sodium carbonate, ascorbic acid, glycine, sodium sulfite and the like, particularly, citric acid and ascorbic acid are preferable.

The sublingual tablet, buccal and oral cavity rapid disintegrator can be produced by mixing a combination drug and an excipient by a method known per se. Where desired, the above-mentioned auxiliaries such as a lubricant, an isotonic agent, a hydrophilic carrier, a water dispersible polymer, a stabilizer, a coloring agent, a sweetener, an antiseptic and the like may be contained. After mixing the above-mentioned components simultaneously or with time staggering, the mixture is compression formed under pressure to give sublingual tablet, buccal tablet or oral cavity rapid disintegrator. To achieve a suitable hardness, a solvent such as water, alcohol and the like is used to moisten or wet as necessary before and after the compression forming. After the forming, the tablets are dried.

When a mucous membrane adhesion tablet (film) is produced, a combination drug and the above-mentioned water dispersible polymer (preferably, hydroxypropylcellulose, hydroxypropylmethylcellulose), an excipient and the like are dissolved in a solvent such as water and the like, and the obtained solution is cast to give a film. In addition, an additive such as a plasticizer, a stabilizer, an antioxidant, a preservative, a coloring agent, a buffer, a sweetener and the like may be added. To impart suitable elasticity to the film, glycols such as polyethylene glycol, propylene glycol and the like may be added, and, bioadhesive polymer (e.g., polycarbofil, carbopol) may be added to increase adhesion of the film to the oral cavity mucous membrane lining. The casting includes pouring the solution on a non-adhesive surface, spreading the solution in a uniform thickness (preferably about 10–1000μ) with a coating tool such as doctor blade and the like and drying the solution to give a film. The film thus formed may be dried at room temperature or under heating and cut into a desired surface area.

Examples of preferable oral cavity rapid disintegrator is a solid rapid diffusing administration agent having a net structure of a combination drug and water-soluble or water diffusable carrier which are inert to the combination drug. The net structure can be obtained by sublimation of a solvent from the solid composition consisting of a solution obtained by dissolving a combination drug in a suitable solvent.

The composition of oral cavity rapid disintegrator preferably contains, in addition to the combination drug, a matrix-forming agent and a secondary component.

The matrix-forming agent include animal proteins or vegetable proteins such as gelatins, dextrins, soybeans, wheat, psyllium seed protein and the like; rubber substances such as gum arabic, guar gum, agar, xanthan and the like; polysaccharides; alginic acids; carboxymethylcelluloses; carragheenans; dextrans; pectins; synthetic polymers such as polyvinylpyrrolidone and the like; a material derived from a gelatin-gum arabic complex and the like. In addition, saccharides such as mannitol, dextrose, lactose, galactose, trehalose and the like; cyclic saccharides such as cyclodextrin and the like; inorganic salts such as sodium phosphate, sodium chloride, aluminum silicate and the like; amino acid having 2 to 12 carbon atoms such as glycine, L-alanine, L-aspartic acid, L-glutamine acid, L-hydroxyproline, L-isoleucine, L-leucine, L-phenylalanine and the like are exemplified.

It is possible to introduce one or more matrix forming agents into a solution or suspension before preparation into a solid. Such matrix-forming agent may exist with a surfactant or without a surfactant. The matrix-forming agent can form a matrix, and also can help maintain the diffusion of the inventive Compound or a combination drug in the solution or suspension.

The composition may contain a secondary component such as a preservative, an antioxidant, a surfactant, a thickener, a coloring agent, a pH adjusting agent, a flavor, a sweetener, a taste masking reagent and the like. A suitable coloring agent include red, black and yellow ferric oxides and FD&C dyes of Elis and Eberald, such as FD&C blue No. 2, FD&C red No. 40 and the like. A suitable flavor contains mint, raspberry, licorice, orange, lemon, grapefruit, caramel, vanilla, cherry, grape flavor and a combination of these. Suitable pH adjusting agent includes citric acid, tartaric acid, phosphoric acid, hydrochloric acid and maleic acid. Suitable sweetener includes aspartame, acesulfame K, thaumatin and the like. Suitable taste masking agent includes sodium bicarbonate, ion exchange resin, cyclodextrin inclusion compound, adsorbent substance and microcapsuled apomorphine.

The preferable preparation is a preparation (the above-mentioned sublingual tablet, buccal and the like) capable of dissolving 90% or more of a combination drug (in water) for about 1 min–about 60 min, preferably about 1 min–about 15 min, more preferably about 2 min–about 5 min, and an oral cavity rapid disintegrator that disintegrates within 1–60 sec, preferably 1–30 sec, more preferably 1–10 sec, after being placed in an oral cavity, which contain a combination drug generally in a proportion of about 0.1–about 50 wt %, referably about 0.1–about 30 wt %.

The content of the above-mentioned excipient in the whole preparation is about 10–about 99 wt %, preferably about 30–about 90 wt %. The content of the β-cyclodextrin or β-cyclodextrin derivative relative to the whole preparation is 0–about 30 wt %. The content of the lubricant relative to the whole preparation is about 0.01–about 10 wt %, preferably about 1–about 5 wt %. The content of the isotonic agent relative to the whole preparation is about 0.1–about 90 wt %, preferably about 10–about 70 wt %. The content of the hydrophilic carrier relative to the whole preparation is about 0.1–about 50 wt %, preferably about 10–about 30 wt %. The content of the water dispersible polymer relative to the whole preparation is about 0.1–about 30 wt %, preferably about 10–about 25 wt %. The content of the stabilizer relative to the whole preparation is about 0.1–about 10 wt %, preferably about 1–about 5 wt %. The above-mentioned preparation may contain additives such as a coloring agent, a sweetener, an antiseptic and the like as necessary.

While the dose of the pharmaceutical composition of the combination drug varies depending on the kind of the combination drug, the patient's age, body weight and condition, the dosage form, the mode and the period of the treatment, the amount of the combination drug may be, for example, generally about 0.01 to about 1000 mg/kg, preferably about 0.01 to about 100 mg/kg, more preferably about 0.1 to about 100 mg/kg, most preferably about 0.1 to about 50 mg/kg, and particularly about 1.5 to about 30 mg/kg per day for a patient (adult weighing about 60 kg), said daily dose being given intravenously all at once or in several portions during a day. It is a matter of course that a lower daily dose may be sufficient or an excessive dose may be required since the dose may vary depending on various factors as discussed above.

The combination drug may be contained in any amount as long as a side effect does not pose a problem. While the daily dose of the combination drug may vary depending on the disease state, the age, sex, body weight and difference in sensitivity of the administration object, timing and interval of administration, characteristics of the pharmaceutical preparation, dispensing, kind, the kind of active ingredient and the like and is not particularly limited, the amount of the drug is generally about 0.001–2000 mg, preferably about 0.01–500 mg, more preferably about 0.1–100 mg, per 1 kg body weight of mammal by oral administration, which is generally administered all at once or in 2 to 4 portions during a day.

When the composition of the present invention and the pharmaceutical composition of a combination drug are concurrently administered, they may be administered at the same time, or the pharmaceutical composition of a combination drug may be administered first, and then the composition of the present invention may be administered. Alternatively, the composition of the present invention may be administered first, and then the pharmaceutical composition of a combination drug may be administered. For time stagger administration, the time difference varies depending on the active ingredient to be administered, dosage form and administration route. For example, when the pharmaceutical composition of a combination drug is to be administered first, the composition of the present invention is administered within 1 min–3 days, preferably 10 min–1 day, more preferably 15 min–1 hour, after the administration of the pharmaceutical composition of a combination drug. When the composition of the present invention is to be administered first, the pharmaceutical composition of a combination drug is administered within 1 min–1 day, preferably 10 min–6 hours, more preferably 15 min–1 hour, after the administration of the composition of the present invention.

The present invention is further described by referring to Reference Examples, Examples and Experimental Examples, which are not intended to restrict the invention.

The ¹H NMR spectrum was determined by a VARIAN GEMINI 200 (200 MHz) spectrometer using tetramethyl silane as an internal standard and represented as the entire δ values in ppm. The number in a bracket when a solvent mixture was employed is the volume ratio of each solvent, wherein % means % by weight unless otherwise specified. The ratio of the solvents in silica gel chromatography shows the volume ratio of the solvents to be admixed.

A high polarity diastereomer means a diastereomer having a smaller Rf value when determined by normal phase thin layer chromatography under the same conditions (e.g., use of ethyl acetate/hexane as a solvent), and a low polarity diastereomer means a diastereomer having a larger Rf value.

Each symbol in examples mean the following:

-   -   s: singlet d: doublet: t: triplet q: quartet dd: double doublet         tt: triple triplet m: multiplet br: broad J: coupling constant

EXAMPLES

The following Reference Examples A can be produced according to Reference Examples of WO99/46424 and Reference Example B can be produced according to Examples of WO99/46424.

Reference Examples A

-   Reference Example A1 ethyl 2-sulfo-1-cyclohexene-1-carboxylate -   Reference Example A2 ethyl     2-chlorosulfonyl-1-cyclohexene-1-carboxylate -   Reference Example A3 ethyl     2-chlorosulfonyl-1-cyclopentene-1-carboxylate -   Reference Example A4 ethyl     2-chlorosulfonyl-1-cycloheptene-1-carboxylate -   Reference Example A5 sodium     6-[N-(4-chloro-2-fluorophenyl)-sulfamoyl]-1-cyclohexene-1-carboxylate -   Reference Example A6 1-(3-fluoro-4-nitrophenyl)-1H-1,2,4-triazole -   Reference Example A7 1-(4-amino-3-fluorophenyl)-1H-1,2,4-triazole -   Reference Example A8 methyl     4-benzyloxycarbonylamino-3-chlorobenzoate -   Reference Example A9 4-benzyloxycarbonylamino-3-chlorobenzoic acid -   Reference Example A10 tert-butyl     N-(4-benzyloxycarbonylamino-3-chlorobenzoyl)glycinate -   Reference Example A11 tert-butyl     N-(4-amino-3-chlorobenzoyl)glycinate -   Reference Example A12     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylic acid -   Reference Example A13 ethyl     2-mercapto-5-phenyl-1-cyclohexene-1-carboxylate -   Reference Example A14     2-chlorosulfonyl-5-phenyl-1-cyclohexene-1-carboxylate -   Reference Example A15 ethyl     5-tert-butyl-2-mercapto-1-cyclohexene-1-carboxylate -   Reference Example A16 ethyl     5-tert-butyl-2-chlorosulfonyl-1-cyclohexene-1-carboxylate -   Reference Example A17 ethyl     5,5-dimethyl-2-mercapto-1-cyclohexene-1-carboxylate -   Reference Example A18 ethyl     2-chlorosulfonyl-5,5-dimethyl-1-cyclohexene-1-carboxylate

Reference Examples B

-   Reference Example B1 ethyl     6-[N-(4-chloro-2-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 1) -   Reference Example B2 ethyl     6-[N-(4-chloro-2-fluorophenyl)-N-methylsulfamoyl]-1-cyclohexene-1-carboxylate     (compound 2) -   Reference Example B3 ethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 3) -   Reference Example B4 ethyl     6-[N-(2,6-diisopropylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 4) -   Reference Example B5 ethyl     6-[N-(4-nitrophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate (compound     5) -   Reference Example B6 ethyl     6-(N-phenylsulfamoyl)-1-cyclohexene-1-carboxylate (compound 6) -   ethyl 2-(N-phenylsulfamoyl)-1-cyclohexene-1-carboxylate (compound 7) -   Reference Example B7 ethyl     2-[N-(4-chloro-2-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 9) -   Reference Example B8     2-(4-methoxyphenyl)-4,5,6,7tetrahydro-1,2-benzisothiazol-3(2H)-one     1,1-dioxide (compound 67) -   ethyl 2-[N-(4-methoxyphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 8) -   Reference Example B9 ethyl     6-[N-(2-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 10) -   Reference Example B10 ethyl     6-[N-(3-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 11) -   Reference Example B11     2-(4-fluorophenyl)-4,5,6,7-tetrahydro-1,2-benzisothiazol-3(2H)-one     1,1-dioxide (compound 68) -   ethyl 6-[N-(4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 12) -   ethyl 2-[N-(4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 18) -   Reference Example B12 ethyl     6-[N-(2,6-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 13) -   Reference Example B13 ethyl     6-[N-(2,3-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 14) -   Reference Example B14 ethyl     6-[N-(2,5-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 15) -   Reference Example B15 ethyl     6-[N-(3,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 16) -   Reference Example B16 ethyl     6-[N-(3,5-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 17) -   Reference Example B17 1-ethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 19) -   d-ethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 20) -   Reference Example B18 ethyl     6-[N-(2-ethoxycarbonylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 21) -   Reference Example B19 methyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 22) -   Reference Example B20 propyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 23) -   Reference Example B21 methyl     6-[N-(4-chloro-2-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 24) -   Reference Example B22 isopropyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 25) -   Reference Example B23 ethyl     6-[N-(2-methoxycarbonylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 26) -   Reference Example B24 ethyl     6-[N-(2-fluoro-4-methylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 27) -   Reference Example B25 ethyl     6-[N-(2-chlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 28) -   Reference Example B26 ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 29) -   Reference Example B27 ethyl     6-[N-(4-chlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 30) -   Reference Example B28 ethyl     6-[N-(2,3,4-trifluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 31) -   Reference Example B29 isobutyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 32) -   Reference Example B30 butyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 33) -   Reference Example B31 ethyl     6-[N-(4-bromo-2-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 34) -   Reference Example B32 ethyl     6-[N-(2,4-dichlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 35) -   Reference Example B33 ethyl     6-[N-(2-acetoxyphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 36) -   Reference Example B34 ethyl     6-[N-(3-chlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 37) -   Reference Example B35 ethyl     6-[N-(2,3-dichlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 38) -   Reference Example B36 ethyl     6-[N-(2-ethylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate (compound     39) -   Reference Example B37 ethyl     6-[N-[4-(2H-1,2,3-triazol-2-yl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 40) -   Reference Example B38 ethyl     6-[N-(2,5-dichlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 41) -   Reference Example B39 ethyl     6-[N-(2-trifluoromethoxyphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 42) -   Reference Example B40 ethyl     6-[N-(2,4,5-trifluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 43) -   Reference Example B41 ethyl     6-[N-[4-(2H-tetrazol-2-yl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 44) -   Reference Example B42 ethyl     6-[N-(2-chloro-4-methylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 45) -   Reference Example B43 ethyl     6-[N-(4-fluoro-2-methylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 46) -   Reference Example B44 ethyl     6-[N-(2,6-dichlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 47) -   Reference Example B45 ethyl     6-[N-[4-(1H-tetrazol-1-yl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 48) -   Reference Example B46 ethyl     6-[N-(4-(1H-1,2,3-triazol-1-yl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 49) -   Reference Example B47 ethyl     6-[N-(2-trifluoromethylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 50) -   Reference Example B48 ethyl     6-[N-(4-methoxycarbonylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 51) -   Reference Example B49 benzyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 52) -   Reference Example B50 ethyl     6-[N-[4-[2,3-bis(tert-butoxycarbonyl)guanidinomethyl]phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 53) -   Reference Example B51 ethyl     6-[N-(2-chloro-4-methoxycarbonylphenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 54) -   Reference Example B52 and ethyl     6-[N-(2-chloro-4-cyanophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 55) -   Reference Example B53 2-hydroxyethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 56) -   Reference Example B54 ethyl     6-[N-[2-fluoro-4-(1H-1,2,4-triazol-1-yl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 57) -   Reference Example B55 ethyl     2-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclopentene-1-carboxylate     (compound 66) -   ethyl     5-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclopentene-1-carboxylate     (compound 58) -   Reference Example B56 tert-butyl     [6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexen-1-yl]carbonyloxyacetate     (compound 59) -   Reference Example B57     [6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexen-1-yl]carbonyloxyacetic     acid (compound 60) -   Reference Example B58 ethyl     7-[N-(2,4-difluorophenyl)sulfamoyl]-1-cycloheptene-1-carboxylate     (compound 61) -   Reference Example B59 ethyl     6-[N-[2-chloro-4-(N-tert-butoxycarbonylmethylcarbamoyl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 62) -   Reference Example B60 ethyl     6-[N-[2-chloro-4-(N-ethoxycarbonylmethylcarbamoyl)phenyl]sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 63) -   Reference Example B61 ethyl     5-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclopentene-1-carboxylate     (compound 64) -   Reference Example B62     2-[4-(2,2,3,3,3-pentafluoropropoxy)-phenyl]-4,5,6,7-tetrahydro-1,2-benzisothiazol-3(2H)-one     1,1-dioxide (compound 69) -   Reference Example B63 ethyl     7-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cycloheptene-1-carboxylate     (compound 65) -   Reference Example B64     2-(2,4-difluorophenyl)-5,6,7,7a-tetrahydro-1,2-benzisothiazol-3(2H)-one     1,1-dioxide (compound 70) -   Reference Example B65 ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 29) -   Reference Example B66 1-ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 71) -   d-ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 72) -   Reference Example B67 ethyl     6-[N-(2-bromo-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 73) -   Reference Example B68 ethyl     6-[N-(4-bromo-2-chlorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 74) -   Reference Example B69 high polarity diastereomer (compound 75) and     low polarity diastereomer (compound 76) of ethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-3-phenyl-1-cyclohexene-1-carboxylate -   Reference Example B70 high polarity diastereomer (compound 77) and     low polarity diastereomer (compound 78) of ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-3-phenyl-1-cyclohexene-1-carboxylate -   Reference Example B71 high polarity diastereomer (compound 79) and     low polarity diastereomer (compound 80) of ethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-3-tert-butyl-1-cyclohexene-1-carboxylate -   Reference Example B72 high polarity diastereomer (compound 81) and     low polarity diastereomer (compound 82) of ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-3-tert-butyl-1-cyclohexene-1-carboxylate -   Reference Example B73 ethyl     6-[N-(2,4-difluorophenyl)sulfamoyl]-3,3-dimethyl-1-cyclohexene-1-carboxylate     (compound 83) -   Reference Example B74 ethyl     6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-3,3-dimethyl-1-cyclohexene-1-carboxylate     (compound 84) -   Reference Example B75 ethyl     3-bromo-6-[N-(2,4-difluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate     (compound 85)

Furthermore, specific examples are shown in Tables 1–5.

TABLE 1

Compound No. R¹ R² Ar n  1 C₂H₅ H

2  2 C₂H₅ CH₃

2  3 C₂H₅ H

2  4 C₂H₅ H

2  5 C₂H₅ H

2  6 C₂H₅ H

2 10 C₂H₅ H

2 11 C₂H₅ H

2 12 C₂H₅ H

2 13 C₂H₅ H

2 14 C₂H₅ H

2 15 C₂H₅ H

2 16 C₂H₅ H

2 17 C₂H₅ H

2 19(l-form) C₂H₅ H

2 20(d-form) C₂H₅ H

2 21 C₂H₅ H

2 22 CH₃ H

2 23 (CH₂)₂CH₃ H

2 24 CH₃ H

2 25 CH(CH₃)₂ H

2 26 C₂H₅ H

2 27 C₂H₅ H

2 28 C₂H₅ H

2 29 C₂H₅ H

2 30 C₂H₅ H

2 31 C₂H₅ H

2 32 CH₂CH(CH₃)₂ H

2 33 (CH₂)₃CH₃ H

2 34 C₂H₅ H

2 35 C₂H₅ H

2 36 C₂H₅ H

2 37 C₂H₅ H

2 38 C₂H₅ H

2 39 C₂H₅ H

2 40 C₂H₅ H

2 41 C₂H₅ H

2 42 C₂H₅ H

2 43 C₂H₅ H

2 44 C₂H₅ H

2 45 C₂H₅ H

2 46 C₂H₅ H

2 47 C₂H₅ H

2 48 C₂H₅ H

2 49 C₂H₅ H

2 50 C₂H₅ H

2 51 C₂H₅ H

2 52

H

2 53 C₂H₅ H

2 54 C₂H₅ H

2 55 C₂H₅ H

2 56 (CH₂)₂OH H

2 57 C₂H₅ H

2 58 C₂H₅ H

1 59 CH₂COOC(CH₃)₃ H

2 60 CH₂COOH H

2 61 C₂H₅ H

3 62 C₂H₅ H

2 63 C₂H₅ H

2 64 C₂H₅ H

1 65 C₂H₅ H

3 71(l-form) C₂H₅ H

2 72(d-form) C₂H₅ H

2 73 C₂H₅ H

2 74 C₂H₅ H

2

TABLE 2

Compound No. R¹ Ar n 7 C₂H₅

2 8 C₂H₅

2 9 C₂H₅

2 18 C₂H₅

2 66 C₂H₅

1

TABLE 3

Compound No.

Ar 67

68

69

70

TABLE 4

Compound No. R¹ R² R* Ar 75(high polaritcydiastereomer) C₂H₅ H

76(low polaritydiastereomer) C₂H₅ H

77(high polaritydiastereomer) C₂H₅ H

78(low polaritydiastereomer) C₂H₅ H

79(high polaritydiastereomer) C₂H₅ H C(CH₃)₃

80(low polaritydiastereomer) C₂H₅ H C(CH₃)₃

81(high polaritydiastereomer) C₂H₅ H C(CH₃)₃

82(low polaritydiastereomer) C₂H₅ H C(CH₃)₃

85 C₂H₅ H Br

TABLE 5

Compound No. Ar 83

84

Example 1

1) compound 72 of Reference Example B66  100 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine 2.25 g 5) MilliQ total amount  100 ml

Compound 72 (646.71 mg) of Reference Example B66 was dissolved in soybean oil (120 g, YOSHIHARA OIL MILL, LTD.). Glycerine (13.5 g, Wako Pure Chemical Industries, Ltd.) and purified egg yolk lecithin (7.33 g, Asahi Kasei Corporation) were dissolved/dispersed in MilliQ water (375 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (ULTRA TURRAX) at 16,000/min for 1 min. The volume was adjusted to 600 ml in a measuring cylinder with MilliQ water. Using a high pressure homogenizer nanomizer (Nanomizer) at 1,000 kgf/cm² pressure by 30 passes, the crude emulsion was finely emulsified. The obtained emulsion composition was adjusted to pH 2.95, 3.50, 3.95, 5.11, 5.44, 6.23, 7.50, 8.95 and 9.56 with hydrochloric acid or sodium hydroxide, and respectively dispensed to test tubes. After nitrogen displacement, the test tubes were sealed. The tubes were sterilized in an autoclave at 121° C. for 15 min to give emulsion compositions having the above-mentioned formulation. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 191 nm.

Example 2

1) compound 72 of Reference Example B66  500 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine 2.25 g 5) MilliQ total amount  100 ml

Compound 72 (1080.38 mg) of Reference Example B66 was dissolved in soybean oil (40.01 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (4.53 g, Wako Pure Chemical Industries, Ltd. Lot SER4725) and purified egg yolk lecithin (2.47 g, Asahi Kasei Corporation Lot 99111561) were dissolved/dispersed in MilliQ water (125 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (ULTRA TURRAX) at 16,000/min for 1 min. The volume was adjusted to 200 ml in a measuring cylinder with MilliQ water. Using a high pressure homogenizer nanomizer (Nanomizer) at 1,000 kgf/cm² pressure for 40 min, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 5.03 mg/ml as charged, and pH was 4.53. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 206 nm.

Example 3

1) compound 72 of Reference Example B66  1000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) MilliQ total amount   100 ml

Compound 72 (2149.30 mg) of Reference Example B66 was dissolved in soybean oil (40.03 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (4.51 g, Wako Pure Chemical Industries, Ltd. Lot SER4725) and purified egg yolk lecithin (2.47 g, Asahi Kasei Corporation Lot 99111561) were dissolved/dispersed in MilliQ water (125 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (ULTRA TURRAX) at 16,000/min for 1 min. The volume was adjusted to 200 ml in a measuring cylinder with MilliQ water. Using a high pressure homogenizer nanomizer (Nanomizer) at 1,000 kgf/cm² pressure for 40 min, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 10.38 mg/ml as charged, and pH was 4.26. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 199 nm.

Example 4

1) compound 72 of Reference Example B66  2000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) MilliQ total amount   100 ml

Compound 72 (4243.0 mg) of Reference Example B66 was dissolved in soybean oil (40.03 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (4.53 g, Wako Pure Chemical Industries, Ltd. Lot SER4725) and purified egg yolk lecithin (2.49 g, Asahi Kasei Corporation Lot 99111561) were dissolved/dispersed in MilliQ water (125 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (ULTRA TURRAX) at 16,000/min for 1 min. The volume was adjusted to 200 ml in a measuring cylinder with MilliQ water. Using a high pressure homogenizer nanomizer (Nanomizer) at 1,000 kgf/cm² pressure for 40 min, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 20.51 mg/ml as charged, and pH was 3.76. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 225 nm.

Example 5

1) compound 72 of Reference Example B66  2500 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) MilliQ total amount   100 ml

Compound 72 (1051.27 mg) of Reference Example B66 was dissolved in soybean oil (8.02 g, YOSHIHARA OIL MILL, LTD. Lot 990825). Glycerine (0.92 g, Wako Pure Chemical Industries, Ltd. Lot SER4725) and purified egg yolk lecithin (0.49 g, Asahi Kasei Corporation Lot 98070161) were dissolved/dispersed in MilliQ water (30 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (KINEMATICA) at 20,000/min for 1 min. Using a high pressure homogenizer MicronLab40 (APV Gaulin) at 1,500 bar pressure by 10 passes, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 3.5 P vials by 2.5 ml. After nitrogen displacement, the vials were sealed. The vials were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 26.78 mg/ml as charged, and pH was 3.92. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 220 nm.

Example 6

1) compound 72 of Reference Example B66  3000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) MilliQ total amount   100 ml

Compound 72 (1262.02 mg) of Reference Example B66 was dissolved in soybean oil (8.03 g, YOSHIHARA OIL MILL, LTD. Lot 990825). Glycerine (0.90 g, Wako Pure Chemical Industries, Ltd. Lot SER4725) and purified egg yolk lecithin (0.49 g, Asahi Kasei Corporation Lot 98070161) were dissolved/dispersed in MilliQ water (30 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (KINEMATICA) at 20,000/min for 1 min. Using a high pressure homogenizer MicronLab40 (APV Gaulin) at 1,500 bar pressure by 10 passes, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 3.5 P vials by 2.5 ml. After nitrogen displacement, the vials were sealed. The vials were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 30.86 mg/ml as charged, and pH was 3.85. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 258 nm.

Example 7

1) compound 72 of Reference Example B66  1000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) MilliQ total amount   100 ml

Compound 72 (2149.32 mg) of Reference Example B66 was dissolved in soybean oil (40.00 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (4.51 g, Wako Pure Chemical Industries, Ltd. Lot SER4725) and purified egg yolk lecithin (2.48 g, Q.P. CorporationPL-100M Lot DE7032) were dissolved/dispersed in MilliQ water (125 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (ULTRA TURRAX) at 16,000/min for 1 min. The volume was adjusted to 200 ml in a measuring cylinder with MilliQ water. Using a high pressure homogenizer nanomizer (Nanomizer) at 1,000 kgf/cm² pressure for 40 min, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 10.11 mg/ml as charged, and pH was 4.22. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 190 nm.

Example 8

1) compound 72 of Reference Example B66  1000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) phosphatidic acid   20 mg 6) MilliQ total amount   100 ml

Compound 72 (403.72 mg) of Reference Example B66 was dissolved in soybean oil (8.01 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (0.90 g, Wako Pure Chemical Industries, Ltd. Lot SER4725), purified egg yolk lecithin (0.49 g, Asahi Kasei Corporation Lot NY000102) and phosphatidic acid (8.18 mg, Sigma Lot 77H8071) were dissolved/dispersed in MilliQ water (30 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (KINEMATICA) at 20,000/min for 1 min. Using a high pressure homogenizer MicronLab40 (APV Gaulin) at 1,500 bar pressure by 10 passes, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 10.68 mg/ml as charged, and pH was 4.09. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 215 nm.

Example 9

1) compound 72 of Reference Example B66  1000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) phosphatidylserine   20 mg 6) MilliQ total amount   100 ml

Compound 72 (400.62 mg) of Reference Example B66 was dissolved in soybean oil (8.06 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (0.90 g, Wako Pure Chemical Industries, Ltd. Lot SEJ4177), purified egg yolk lecithin (0.49 g, Asahi Kasei Corporation Lot NY000102) and phosphatidylserine (8.02 mg, Sigma Lot 80K1453) were dissolved/dispersed in MilliQ water (30 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (KINEMATICA) at 20,000/min for 1 min. Using a high pressure homogenizer MicronLab40 (APV Gaulin) at 1,500 bar pressure by 10 passes, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 10.45 mg/ml as charged, and pH was 4.02. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 242 nm.

Example 10

1) compound 72 of Reference Example B66  1000 mg 2) soybean oil   20 g 3) purified egg yolk lecithin  1.2 g 4) glycerine  2.25 g 5) phosphatidylinositol   20 mg 6) MilliQ total amount   100 ml

Compound 72 (401.06 mg) of Reference Example B66 was dissolved in soybean oil (8.01 g, YOSHIHARA OIL MILL, LTD. Lot 000508). Glycerine (0.91 g, Wako Pure Chemical Industries, Ltd. Lot SEJ4177), purified egg yolk lecithin (0.49 g, Asahi Kasei Corporation Lot NY000102) and phosphatidylinositol (8.09 mg, Sigma Lot 49H8006) were dissolved/dispersed in MilliQ water (30 ml) at 60° C. These were mixed and roughly emulsified with a homogenizer Polytron (KINEMATICA) at 20,000/min for 1 min. Using a high pressure homogenizer MicronLab40 (APV Gaulin) at 1,500 bar pressure by 10 passes, the crude emulsion was finely emulsified. The obtained emulsion composition was passed through a membrane filter (Millipore Sterivex-HV) having a pore size of 0.45 μm, and filled in 2 ml ampoules by 2 ml. After nitrogen displacement, the ampoules were heat-sealed. The ampoules were sterilized in an autoclave at 121° C. for 15 min to give an emulsion composition having the above-mentioned formulation. The concentration of Compound 72 was stably 10.44 mg/ml as charged, and pH was 4.21. The dispersion phase, in which Compound 72 had been dissolved, showed an average particle size of 244 nm.

Experimental Example 1

The emulsion composition obtained in Example 1 was analyzed by high performance liquid chromatography (HPLC). As a result, it was found that the production rate of aniline, which was a decomposition product of compound 72, depended on the adjusted pH (FIG. 1). While aniline decomposition product was scarcely produced at a pH range of from 2.95 to 5.44, the production rate increased with the pH increase of from 6.23 to 9.56. The production rate refers to the HPLC peak area of aniline relative to the total of the HPLC peak area of compound 72 and HPLC peak area of the aniline.

Experimental Example 2 NO Production-inhibiting Effect

Mouse macrophage cell line RAW264.7 was used as an iNOS-inducible cell and a test compound was examined for its % inhibition of NO production. The test compound was dissolved at the concentration of 10 mM in N,N-dimethylformamide and diluted with an RPMI-1640 medium at the concentration of 0.1 mM. The concentration was further adjusted using the medium, so that a final concentration ranging from 10 μM to 10 nM could be obtained by a 10-fold serial dilution, and the test compound was added to a culture medium. On the day before the was adjusted at 5×10⁵/ml with 10% inactivated fetal calf serum in an RPMI-1640 medium and inoculated to a 96-well plate at 1×10⁵ cells/0.2 ml per well. After incubating at 37° C. under an atmosphere of 5% CO₂/95% air overnight, the test compound adjusted as described above was added and then LPS and interferon-gamma were added at the final concentrations of 5 ng/ml and 1 U/ml, respectively. After further incubating overnight, culture supernatants were examined for the concentration of nitrite ion (stable metabolite of NO) which was used as an index for the NO production. The nitrite ion concentration was determined by adding 25 μl of 20 μg/ml of 2,3-diaminonaphthalene (DAN) to 50 μl of the culture supernatant, followed by incubating at room temperature for 10 minutes, followed by adding 25 μl of 0.5 N NaOH, followed by determining a fluorescence at 450 nm (excitation wavelength: 365 nm). The results are shown in Table 1. An IC₅₀ represents the concentration of the test compound which inhibits 50% of the NO production.

TABLE 6 Compound No. IC₅₀ (μM) 1  0.12–0.32  2 1.1 3 0.013–0.039 4 2.6 5 3.7 6 0.59 7 4.0 8 4.8 9 4.1 10 0.058 11 0.31 12 0.18 13 0.46 14 0.59 15 0.28 16 0.18 17 2.6 18 4.4 19 2.0 20 0.005 21 2.4 22 0.18 23 0.027 24 0.78 25 0.32 26 3.3 27 0.25 28 0.029 29 0.0093 30 0.54 31 0.23 32 0.23 33 0.26 34 0.35 35 0.082 36 1.5 37 0.13 38 0.041 39 0.32 40 2.5 41 0.24 42 1.1 43 0.073 44 3.7 45 0.027 46 0.054 47 0.048 48 3.8 49 5.6 50 2.0 51 4.0 52 4.3 53 2.4 54 2.3 55 3.3 56 1.0 57 4.6 58 0.39 59 0.54 60 7.9 61 2.8 62 3.8 63 8.4 64 0.25 65 0.32 66 8.1 67 6.0 68 5.1 69 6.8 70 0.35

In Table 6, Compound 1 was tested 7 times and Compound 3 was tested 9 times, and the minimum and the maximum values of the IC₅₀ are shown.

Any of the test compounds exhibited a potent inhibitory effect on the NO production by RAW264.7 cell, revealing that an inventive oxazole derivative had an excellent NO production-inhibiting effect.

Experimental Example 3 Cytokine Production-inhibitory Effect

Using mouse macrophage cell line RAW264.7, a test compound was examined for its % inhibition of a cytokine production. The test compound was dissolved at the concentration of 10 mM in N,N-dimethylformamide and diluted with an RPMI-1640 medium at the concentration of 0.1 mM. The concentration was further adjusted using the medium, so that a final concentration ranging from 10 μM to 10 nM could be obtained by a 10-fold serial dilution, and the test compound was added to a culture medium. On the day before the experiment, the cell was adjusted at 5×10⁵/ml with 10% inactivated fetal calf serum in an RPMI-1640 medium and inoculated to a 96-well plate at 1×10⁵ cells/0.2 ml per well. After incubating at 37° C. under an atmosphere of 5% CO₂/95% air overnight, the test compound adjusted as described above was added and then LPS and interferon-gamma were added at the final concentrations of 5 ng/ml and 1 U/ml, respectively. After further incubating overnight, culture supernatants were examined for the concentrations of TNF-α and IL-6. IL-1α was determined using 1.0 μg/ml of LPS in the absence of interferon gamma under otherwise similar conditions. Each cytokine was determined using an assay kit manufactured by Amersham. The results are shown in Table 7. An IC₅₀ represents the concentration of the test compound that inhibits 50% of the cytokine production.

TABLE 7 Compound IC₅₀ (μM) No. TNF-α IL-1α IL-6 1 0.20 0.39 0.061 0.53 0.014

In Table 7, TNF-α and IL-6 were tested twice and IC₅₀ values thereof are shown.

Experimental Example 4 Effect on Increase Nitric Oxide Concentration in Blood

When NO is produced in vivo as a result of a defense mechanism against infection, etc., or immune abnormality, it is readily metabolized to nitrous acid or nitric acid, resulting in an increase of nitric oxide concentration (NOx) in blood. Accordingly, an experimental animal was used to examine the effect of test compounds on the increase NOx concentration in the blood.

Female BALB/c mice (6 weeks old) were purchased and acclimatized for 1 week and assigned to the groups in each of which 6 to 8 animals were included. In a treatment group, 30 mg/kg of a test compound suspended in a 0.5% aqueous methyl cellulose solution was given orally. In a control group, the vehicle was given similarly. After 1 hour, LPS (10 mg/kg) was given intraperitoneally to each animal in the treatment and control groups, and the blood was taken 6 hours after the LPS administration and examined for concentration of nitrate ion+nitrite ion in the serum. The nitrate ion was converted into the nitrite ion using a nitrate reductase, and the measured values, which was obtained by the fluorescent method using DAN described above, were represented as the total nitrate ion concentration. The % inhibition in a treatment group when compared with the control group is shown in Table 8.

TABLE 8 Compound No. NO_(x) inhibition (%) in blood 1 76 3 90

Experimental Example 5 Effect on Increase Cytokine Concentration in Blood

As a result of a defense mechanism against an infection and the like or an immune abnormality, various cytokines are produced in vivo. Accordingly, an experimental animal was used to examine the effect of a test compound on the increase cytokine concentration in blood.

Female BALB/c mice (6 weeks old) were purchased and acclimatized for 1 week and assigned to the groups in each of which 6 to 8 animals were included. In a treatment group, 30 mg/kg of a test compound suspended in a 0.5% aqueous methyl cellulose solution was given orally. In a control group, the vehicle was given similarly. After 1 hour, LPS (10 mg/kg) was given intraperitoneally to each animal in the treatment and control groups, and the blood was taken 1 hour after the LPS administration and examined for concentrations of TNF-α in the serum. IL-1α, IL-1β and IL-6 concentrations were determined using the serum from the blood taken 6 hours after the LPS administration. The % inhibition in a treatment group when compared with the control group is shown in Table 9. Each cytokine was determined using an assay kit manufactured by Amersham.

TABLE 9 Compound cytokine inhibition (%) in blood No. TNF-α IL-1α IL-1β IL-6 1 98 97 73 89

As is evident from the aforementioned Tables 6 to 9, above-mentioned Compound (Ie) has an excellent inhibitory effect on NO production, inhibitory effect on cytokine production, inhibitory effect on the increase of nitric oxide concentration in blood and inhibitory effect on the increase of cytokine concentration in blood.

Experimental Example 6 Long Term Stability

The drug concentration, average particle size, pH and production rate of aniline of the emulsion composition obtained in Example 7 after 3 months at 25° C. were measured. The results are shown in Table 10.

TABLE 10 drug average production concentration particle rate of (mg/ml) size (nm) pH aniline (%) initial 10.11 190 4.22 0.719 3 10.10 197 4.26 0.780 months

As is evident from Table 10, no variation from the initial values was found, thus showing superior stability for a long term.

The compound numbers in the aforementioned Tables 6 to 10 refer to those in Tables 1 to 5.

INDUSTRIAL APPLICABILITY

The composition of the present invention has a pH adjusted to not more than about 6. Therefore, the inventive Compound, a salt thereof, and a prodrug thereof, which are the main ingredients, and the composition of the present invention have superior stability, even after sterilization in an autoclave etc.

Moreover, the composition of the present invention can increase the concentration of the inventive Compound, a salt thereof and a prodrug thereof, and by controlling the particle size of the disperse phase particles, retentivity in blood, blood vessel permeability and migration into inflammatory sites can be enhanced. As a result, pharmacokinetics and biodistribution of the inventive Compound, a salt thereof and a prodrug thereof can be improved and targeting becomes possible, which in turn makes more effective administration of the drug with suppressed side effect attainable. Therefore, the composition of the present invention is useful for the treatment of the target diseases particularly by intravenous administration. 

1. An emulsion composition comprising a disperse phase particle in water, said particle having an oil component; an emulsifier; and d-ethyl 6-[N-(2-chloro-4-fluorophenyl)sulfamoyl]-1-cyclohexene-1-carboxylate, a salt thereof or a prodrug thereof; wherein said composition has a pH of not more than
 6. 2. The composition according to claim 1, which is an oil-in-water type.
 3. The composition according to claim 1, which has a pH of 3 to
 6. 4. The composition according to claim 1, which is used as an injection.
 5. The composition according to claim 1, wherein the oil component is selected from the group consisting of a vegetable oil, a partially hydrogenated vegetable oil, a simple glyceride, a mixed glyceride and a medium-size chain fatty acid glycerol ester.
 6. The composition according to claim 1, wherein the oil component is a vegetable oil.
 7. The composition according to claim 6, wherein the vegetable oil is a soybean oil, a cottonseed oil, a rapeseed oil, a peanut oil, a safflower oil, a sesame oil, a rice bran oil, a corn germ oil, a sunflower oil, a poppy oil or an olive oil.
 8. The composition according to claim 7, wherein the vegetable oil is a soybean oil.
 9. The composition according to claim 1, wherein the emulsifier is a phospholipid or a nonionic surfactant.
 10. The composition according to claim 1, wherein the emulsifier is a phospholipid.
 11. The composition according to claim 10, wherein the phospholipid is an egg yolk lecithin, a soybean lecithin, a hydrogenation product thereof, a phosphatidylcholine, a phosphatidylethanolamine, a phosphatidic acid, a phosphatidylserine, a phosphatidylinositol or a phosphatidylglycerol.
 12. The composition according to claim 11, wherein the phospholipid is an egg yolk lecithin.
 13. The composition according to claim 1, wherein the oil component is used in a proportion of about 1–about 30 wt % of the whole composition.
 14. The composition according to claim 1, wherein the emulsifier is used in a proportion of about 0.1 about 10 w/v %.
 15. The composition according to claim 1, wherein the emulsifier is contained in a proportion of about 0.1–about 150 wt % of the oil component.
 16. The composition according to claim 1, wherein said oil component is a vegetable oil and said emulsifier is a phospholipid.
 17. The composition according to claim 1, wherein said oil component is a soybean oil, said emulsifier is an egg yolk lecithin, said water is purified water and which further comprises a glycerol.
 18. The composition according to claim 1, which comprises said carboxylate, a salt thereof or a prodrug thereof in a proportion of about 0.001–about 95 wt % of the whole composition.
 19. The composition according to claim 1, which comprises said carboxylate, a salt thereof or a prodrug thereof in a proportion of about 0.01–about 30 wt % of the whole composition.
 20. The composition according to claim 1, wherein the disperse phase particle has an average particle size of about 25–about 500 nm.
 21. The composition according to claim 1, which is a nitric oxide and/or a cytokine production inhibitor.
 22. The composition according to claim 1, which is an agent for the treatment of a cardiac disease, an autoimmune disease, sepsis or septic shock.
 23. A method for the treatment of a cardiac disease, an autoimmune disease, sepsis or septic shock, which comprises administering an effective amount of the composition of claim 1 to a mammal. 